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(Question)
Q: What type of function does the long bone perform? Read this paragraph and choose the correct option from the provided answers: Long Bones A long bone is one that is cylindrical in shape, being longer than it is wide. Keep in mind, however, that the term describes the shape of a bone, not its size. Long bones are found in the arms (humerus, ulna, radius) and legs (femur, tibia, fibula), as well as in the fingers (metacarpals, phalanges) and toes (metatarsals, phalanges). Long bones function as levers; they move when muscles contract. Choices: - acts as pivot - works as piston - acts as pulley - work as lever A:
(Answer)
work as lever
(Question)
Q: Like mitochondria, plastids contain their own what? Read this paragraph and choose the correct option from the provided answers: Like mitochondria, plastids contain their own DNA. Therefore, according to endosymbiotic theory, plastids may also have evolved from ancient, free-living prokaryotes that invaded larger prokaryotic cells. If so, they allowed early eukaryotes to make food and produce oxygen. Choices: - riboflavin - bacteria - molecule - dna A:
(Answer)
dna
(Question)
Q: What do you get by multiplying volume by the density of water? Read this paragraph and choose the correct option from the provided answers: Consider a gigantic tub filled with water as shown below. A column of water with a cross-sectional area of 1.00 m 2 is designated. If we multiply the cross-sectional area by the height of the column, we get the volume of water in this column. We can then multiply this volume by the density of water, 1000. kg/m 3 , and get the mass of water in the column. We then multiply this mass by the acceleration due to gravity, , to get the weight of the water in this column. Choices: - velocity of water - temperature of water - weight of water - mass of water A:
(Answer)
| mass of water | 6 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Q: Q: What instrument made it possible to study pressure quantitatively? Read this paragraph and choose the correct option from the provided answers: The thermometer was developed a short time after the barometer made it possible to study pressure in a quantitative manner. Although crude thermometers had been available for quite some time, Daniel Fahrenheit constructed a more accurate thermometer in 1724 using mercury in glass. Because the height of the mercury in the thermometer was a relative measure, certain fixed points needed to be defined. Originally, Fahrenheit defined a 1:1:1 mixture of ice, salt, and ammonium chloride as 0°F, and the freezing/melting point of ice as 32°F. On this scale, the normal temperature of the human body is 96°F, and the boiling point of water is 212°C. The modern Fahrenheit scale is defined in terms of the normal freezing and boiling points of water. Choices: - anemometer - seismograph - thermometer - barometer A:
A: barometer
Q: Q: The older parts of what structures anchor the plant and transport water and solutes between the soil and shoots? Read this paragraph and choose the correct option from the provided answers: Choices: - cells - bark - leaves - roots A:
A: roots
Q: Q: Ethers readily dissolve what type of molecules? Read this paragraph and choose the correct option from the provided answers: Ethers are good solvents for other organic compounds because of their low reactivity. They readily dissolve non-polar molecules. Diethyl ether is perhaps the best known ether. It is widely used as a solvent and has been used as an inhalable anesthetic. Choices: - proteins - lipids - polar - non-polar A:
A: non-polar
Q: Q: What do you call the membrane lining the back of the eye? Read this paragraph and choose the correct option from the provided answers: The retina is a membrane lining the back of the eye. The retina has nerve cells called rods and cones that change images to electrical signals. Rods are good at sensing dim light but can’t distinguish different colors of light. Cones can sense colors but not dim light. There are three different types of cones. Each type senses one of the three primary colors of light (red, green, or blue). Choices: - cornea - stimulation - aperture - retina A:
| A: retina | 2 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Q: Q: The enzymes that participate in fatty acid catabolism are located in what? Read this paragraph and choose the correct option from the provided answers: Like glucose, the fatty acids released in the digestion of triglycerides and other lipids are broken down in a series of sequential reactions accompanied by the gradual release of usable energy. Some of these reactions are oxidative and require nicotinamide adenine dinucleotide (NAD+) and flavin adenine dinucleotide (FAD). The enzymes that participate in fatty acid catabolism are located in the mitochondria, along with the enzymes of the citric acid cycle, the electron transport chain, and oxidative phosphorylation. This localization of enzymes in the mitochondria is of the utmost importance because it facilitates efficient utilization of energy stored in fatty acids and other molecules. Fatty acid oxidation is initiated on the outer mitochondrial membrane. There the fatty acids, which like carbohydrates are relatively inert, must first be activated by conversion to an energy-rich fatty acid derivative of coenzyme A called fatty acyl-coenzyme A (CoA). The activation is catalyzed by acyl-CoA synthetase. For each molecule of fatty acid activated, one molecule of coenzyme A and one molecule of adenosine triphosphate Saylor URL: http://www. saylor. org/books. Choices: - carbohydrates - atoms - nucleus - mitochondria A:
A: mitochondria
Q: Q: What is the largest of the sinuses? Read this paragraph and choose the correct option from the provided answers: Venous Drainage of the Brain Circulation to the brain is both critical and complex (see Figure 20.37). Many smaller veins of the brain stem and the superficial veins of the cerebrum lead to larger vessels referred to as intracranial sinuses. These include the superior and inferior sagittal sinuses, straight sinus, cavernous sinuses, left and right sinuses, the petrosal sinuses, and the occipital sinuses. Ultimately, sinuses will lead back to either the inferior jugular vein or vertebral vein. Most of the veins on the superior surface of the cerebrum flow into the largest of the sinuses, the superior sagittal sinus. It is located midsagittally between the meningeal and periosteal layers of the dura mater within the falx cerebri and, at first glance in images or models, can be mistaken for the subarachnoid space. Most reabsorption of cerebrospinal fluid occurs via the chorionic villi (arachnoid granulations) into the superior sagittal sinus. Blood from most of the smaller vessels originating from the inferior cerebral veins flows into the great cerebral vein and into the straight sinus. Other cerebral veins and those from the eye socket flow into the cavernous sinus, which flows into the petrosal sinus and then into the internal jugular vein. The occipital sinus, sagittal sinus, and straight sinuses all flow into the left and right transverse sinuses near the lambdoid suture. The transverse sinuses in turn flow into the sigmoid sinuses that pass through the jugular foramen and into the internal jugular vein. The internal jugular vein flows parallel to the common carotid artery and is more or less its counterpart. It empties into the brachiocephalic vein. The veins draining the cervical vertebrae and the posterior surface of the skull, including some blood from the occipital sinus, flow into the vertebral veins. These parallel the vertebral arteries and travel through the transverse foramina of the cervical vertebrae. The vertebral veins also flow into the brachiocephalic veins. Table 20.13 summarizes the major... Choices: - Maxillary sinus - Sphenoid sinus - Frontal sinus - superior sagittal sinus A:
A: superior sagittal sinus
Q: Q: Flatworms reproduce sexually. in most species, the same individuals produce both what? Read this paragraph and choose the correct option from the provided answers: Flatworms reproduce sexually. In most species, the same individuals produce both eggs and sperm. After fertilization occurs, the fertilized eggs pass out of the adult’s body and hatch into larvae. There may be several different larval stages. The final larval stage develops into the adult form, and the life cycle repeats. Choices: - gametes - heart and sperm - diploid and haploid - eggs and sperm A:
A: eggs and sperm
Q: Q: Why do microwaves have a higher energy than radio waves? Read this paragraph and choose the correct option from the provided answers: Find the microwave in the Figure above . A microwave is an electromagnetic wave with a relatively long wavelength and low frequency. Microwaves are often classified as radio waves, but they have higher frequencies than other radio waves. With higher frequencies, they also have more energy. That’s why microwaves are useful for heating food in microwave ovens. Microwaves have other important uses as well, including cell phone transmissions and radar. These uses are described below. You can learn more about microwaves and their uses in the video at this URL: http://www. youtube. com/watch?v=YgQQb1BVnu8 . Choices: - higher resonance - lower frequency - higher decibel - higher frequency A:
| A: higher frequency | 2 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
(Question)
Q: Viroids are plant pathogens much simpler than what, but like them can reproduce only within a host cell? Read this paragraph and choose the correct option from the provided answers: Viroids Viroids are plant pathogens: small, single-stranded, circular RNA particles that are much simpler than a virus. They do not have a capsid or outer envelope, but like viruses can reproduce only within a host cell. Viroids do not, however, manufacture any proteins, and they only produce a single, specific RNA molecule. Human diseases caused by viroids have yet to be identified. Viroids are known to infect plants (Figure 21.18) and are responsible for crop failures and the loss of millions of dollars in agricultural revenue each year. Some of the plants they infect include potatoes, cucumbers, tomatoes, chrysanthemums, avocados, and coconut palms. Choices: - pests - bacteria - parasites - viruses A:
(Answer)
viruses
(Question)
Q: Organs are groups of what working together? Read this paragraph and choose the correct option from the provided answers: Choices: - muscles - bones - tendons - tissues A:
(Answer)
tissues
(Question)
Q: The right ventricle pumps what type of blood toward the lungs? Read this paragraph and choose the correct option from the provided answers: The right ventricle pumps oxygen-poor blood toward the lungs, where it receives oxygen. Choices: - plasma - oxygenated - oxygen-rich - oxygen-poor A:
(Answer)
| oxygen-poor | 6 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Q: Q: A sprain is a strain or tear in what part of the body? Read this paragraph and choose the correct option from the provided answers: Another type of skeletal system injury is a sprain. A sprain is a strain or tear in a ligament that has been twisted or stretched too far. Ankle sprains are a common type of sprain. Athletes often strain a ligament in the knee called the ACL. Warming up adequately and stretching before playing sports may reduce the risk of a sprain. Ligament injuries can take a long time to heal. Rest, ice, compression, and elevation of the sprained area may help the healing process. Choices: - stomach - skeleton - torso - a ligament A:
A: a ligament
Q: Q: Scientists measure the gases that escape from a volcano to predict what? Read this paragraph and choose the correct option from the provided answers: Scientists measure the gases that escape from a volcano to predict eruptions. Gases like sulfur dioxide (SO 2 ), carbon dioxide (CO 2 ), hydrochloric acid (HCl), and water vapor can be measured at the site. Gases may also be measured from satellites. The amounts of gases and the ratios of gases are calculated to help predict eruptions. Choices: - storms - floods - snowfall - eruptions A:
A: eruptions
Q: Q: What can be calculated by solving the average speed formula? Read this paragraph and choose the correct option from the provided answers: Competition is a relationship between organisms that depend on the same resources. Competition can occur between members of the same species or between members of different species. Choices: - accelaration - distance or mass - mass or time - distance or time A:
A: distance or time
Q: Q: Phagocytosis, pinocytosis, and receptor-mediated endocytosis are the three types of what? Read this paragraph and choose the correct option from the provided answers: Choices: - modulators - mitosis - nanoparticles - endocytosis A:
| A: endocytosis | 2 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Ques: Q: What are passed from one generation to the next so species can survive? Read this paragraph and choose the correct option from the provided answers: Choices: - selections - mutations - fluctuations - adaptatioins A:
Ans: adaptatioins
Ques: Q: What trend is occurring involving the extent of arctic sea ice in summer? Read this paragraph and choose the correct option from the provided answers: The extent of Arctic sea ice in summer has been decreasing rapidly. The ice pictured below is the sea ice minimum in 2011 ( Figure below ). The yellow line is the median minimum ice extent for 1979–2000. Choices: - slow decrease - water decrease - Ice growth - rapid decrease A:
Ans: rapid decrease
Ques: Q: The periodic table is one of the cornerstones of chemistry because it organizes all the known elements on the basis of their what? Read this paragraph and choose the correct option from the provided answers: The periodic table is one of the cornerstones of chemistry because it organizes all the known elements on the basis of their chemical properties. A modern version is shown in Figure 2.7 "A Modern Periodic Table". Most periodic tables provide additional data (such as atomic mass) in a box that contains each element’s symbol. The elements are listed in order of atomic number. Choices: - size properties - liquid properties - acid properties - chemical properties A:
Ans: chemical properties
Ques: Q: Each cell and every living thing requires what? Read this paragraph and choose the correct option from the provided answers: All living things need energy. You can often see energy at work in living things. Look at the hummingbird and jellyfish in Figure below . Both of them are obviously using energy. Living things constantly use energy in less obvious ways as well. Inside every cell, all living things need energy to carry out life processes. Life runs on chemical energy. Where does this chemical energy come from?. Choices: - potassium - calcium - salt - energy A:
Ans: | energy | 7 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Q: What is defined as the spreading of white light into its full spectrum of wavelengths? Read this paragraph and choose the correct option from the provided answers: We see about six colors in a rainbow—red, orange, yellow, green, blue, and violet; sometimes indigo is listed, too. Those colors are associated with different wavelengths of light, as shown in Figure 25.22. When our eye receives pure-wavelength light, we tend to see only one of the six colors, depending on wavelength. The thousands of other hues we can sense in other situations are our eye’s response to various mixtures of wavelengths. White light, in particular, is a fairly uniform mixture of all visible wavelengths. Sunlight, considered to be white, actually appears to be a bit yellow because of its mixture of wavelengths, but it does contain all visible wavelengths. The sequence of colors in rainbows is the same sequence as the colors plotted versus wavelength in Figure 25.22. What this implies is that white light is spread out according to wavelength in a rainbow. Dispersion is defined as the spreading of white light into its full spectrum of wavelengths. More technically, dispersion occurs whenever there is a process that changes the direction of light in a manner that depends on wavelength. Dispersion, as a general phenomenon, can occur for any type of wave and always involves wavelength-dependent processes. Dispersion Dispersion is defined to be the spreading of white light into its full spectrum of wavelengths. Choices: - immersion - saturation - combustion - dispersion A:
dispersion
Q: What type of resource is water power? Read this paragraph and choose the correct option from the provided answers: Water power does not burn a fuel. So it causes less pollution than many other kinds of energy. Water power is also a renewable resource. Water keeps flowing downhill. Although we use some of the energy from this movement, we are not using up the water. Choices: - biological - nonrenewable - geothermal - renewable A:
renewable
Q: Glucocorticoids and mineralocorticoids are the two main types of what in humans? Read this paragraph and choose the correct option from the provided answers: Choices: - carotenoids - metabolites - hormones - corticosteroids A:
| corticosteroids | 1 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Q: Q: What do osteoclasts do to bone? Read this paragraph and choose the correct option from the provided answers: Under the direction of osteocytes, osteoblasts continuously build up bone, while osteoclasts continuously break down bone. These processes help maintain mineral homeostasis. Choices: - build it up - strengthen it - lengthen it - break it down A:
A: break it down
Q: Q: What season is it in the southern hemisphere when it's winter in the northern? Read this paragraph and choose the correct option from the provided answers: Winter solstice for the Northern Hemisphere happens on December 21 or 22. The North Pole of Earth's axis points away from the Sun ( Figure below ). Light from the Sun is spread out over a larger area. With fewer daylight hours in winter, there is also less time for the Sun to warm the area. When it is winter in the Northern Hemisphere, it is summer in the Southern Hemisphere. Choices: - Winter - Spring - autumn - summer A:
A: summer
Q: Q: Polar molecules result from differences in electronegativity of what in the molecule? Read this paragraph and choose the correct option from the provided answers: Polar molecules result from differences in electronegativity of the atoms in the molecule. Choices: - ions - protons - iron - atoms A:
A: atoms
Q: Q: What kind of solid is characterized by an unorganized and unpredictable structure? Read this paragraph and choose the correct option from the provided answers: When water freezes in a non-crystalline, amorphous form as frost, the water molecules are fixed in place, but not in a regular, repeating pattern. Frost and other amorphous solids are characterized by their unorganized and unpredictable structure. Because ice comes in both amorphous and crystalline forms, there are differences in the physical properties of ice such as its hardness and density. Choices: - magnetic - aqueous - porous - amorphous A:
| A: amorphous | 2 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Q: What is the bulb called in the frontal lobe that processes smells? Read this paragraph and choose the correct option from the provided answers: The frontal lobe is located at the front of the brain, over the eyes. This lobe contains the olfactory bulb, which processes smells. The frontal lobe also contains the motor cortex, which is important for planning and implementing movement. Areas within the motor cortex map to different muscle groups, and there is some organization to this map, as shown in Figure 35.22. For example, the neurons that control movement of the fingers are next to the neurons that control movement of the hand. Neurons in the frontal lobe also control cognitive functions like maintaining attention, speech, and decisionmaking. Studies of humans who have damaged their frontal lobes show that parts of this area are involved in personality, socialization, and assessing risk. Choices: - peripheral bulb - auditory bulb - sensory bulb - olfactory bulb A:
olfactory bulb
Q: Biomass can also be processed to make what kind of fuel? Read this paragraph and choose the correct option from the provided answers: Biomass is another renewable source of energy. Biomass includes wood, grains, and other plant materials or waste materials. People can burn wood directly for energy in the form of heat. Biomass can also be processed to make biofuel. Biofuel is a fairly new type of energy that is becoming more popular. Biomass is useful because it can be made liquid. This means that they can be used in cars and trucks. Some car engines can be powered by pure vegetable oil or even recycled vegetable oil. Sometimes the exhaust from these cars smells like French fries!. Choices: - hydrogen fuel - gasoline - fossil - biofuel A:
biofuel
Q: Where do carrier proteins carry ions or molecules? Read this paragraph and choose the correct option from the provided answers: A carrier protein is a transport protein that is specific for an ion, molecule, or group of substances. Carrier proteins "carry" the ion or molecule across the membrane by changing shape after the binding of the ion or molecule. Carrier proteins are involved in passive and active transport. A model of a channel protein and carrier proteins is shown in Figure below . Choices: - between nuclei - across isotopes - back to nucleus - across the membrane A:
across the membrane
Q: What type of plants do not typically require deep roots or woody stems? Read this paragraph and choose the correct option from the provided answers: Modern plants that live in water are called aquatic plants . Living in water has certain advantages for plants. One advantage is, well, the water. There's plenty of it and it's all around. Therefore, most aquatic plants do not need adaptations for absorbing, transporting, and conserving water. They can save energy and matter by not growing extensive root systems, vascular tissues, or thick cuticle on leaves. Support is also less of a problem because of the buoyancy of water. As a result, adaptations such as strong woody stems and deep anchoring roots are not necessary for most aquatic plants. Choices: - surface plants - dry plants - bacterial plants - aquatic plants A:
| aquatic plants | 0 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
(Q).
Q: The largest population size that can be supported in an area without harming the environment is referred to as what? Read this paragraph and choose the correct option from the provided answers: At what population size does growth start to slow in the logistic model of growth? That depends on the population’s carrying capacity (see Figure above ). The carrying capacity (K) is the largest population size that can be supported in an area without harming the environment. Population growth hits a ceiling at that size in the logistic growth model. Choices: - population shift - containing capacity - population density - carrying capacity A:
(A).
carrying capacity
(Q).
Q: Because atoms have equal numbers of positive protons and negative electrons, what kind of electric charge do they possess? Read this paragraph and choose the correct option from the provided answers: Atoms have equal numbers of positive protons and negative electrons, so they are neutral in electric charge. Choices: - none - positive - negative - neutral A:
(A).
neutral
(Q).
Q: What is released during an enthalpy reaction? Read this paragraph and choose the correct option from the provided answers: The enthalpy of the reactants is greater than the enthalpy of the products. During the course of the reaction, heat is released to the surroundings. Choices: - gold - precipitation - sound - heat A:
(A).
| heat | 8 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Q: What 3 types of friction occur between solid surfaces? Read this paragraph and choose the correct option from the provided answers: Friction is the force that opposes motion between any surfaces that are in contact. There are four types of friction: static, sliding, rolling, and fluid friction. Static, sliding, and rolling friction occur between solid surfaces. Fluid friction occurs in liquids and gases. All four types of friction are described below. You can see a video demonstration of the different types at this URL:. Choices: - static , arching , rolling - static,desending,sliding - static , ascending , rolling - static, sliding, rolling A:
static, sliding, rolling
Q: What blood pressure reading measures the pressure in the vessels between heartbeats? Read this paragraph and choose the correct option from the provided answers: 40.4 | Blood Flow and Blood Pressure Regulation By the end of this section, you will be able to: • Describe the system of blood flow through the body • Describe how blood pressure is regulated Blood pressure (BP) is the pressure exerted by blood on the walls of a blood vessel that helps to push blood through the body. Systolic blood pressure measures the amount of pressure that blood exerts on vessels while the heart is beating. The optimal systolic blood pressure is 120 mmHg. Diastolic blood pressure measures the pressure in the vessels between heartbeats. The optimal diastolic blood pressure is 80 mmHg. Many factors can affect blood pressure, such as hormones, stress, exercise, eating, sitting, and standing. Blood flow through the body is regulated by the size of blood vessels, by the action of smooth muscle, by one-way valves, and by the fluid pressure of the blood itself. Choices: - metabolic - plasma - systolic - diastolic A:
diastolic
Q: What are used to balance chemical equations? Read this paragraph and choose the correct option from the provided answers: Coefficients are used to balance chemical equations. A coefficient is a number placed in front of a chemical symbol or formula. It shows how many atoms or molecules of the substance are involved in the reaction. Choices: - isotopes - densities - outputs - coefficients A:
coefficients
Q: All matter in the universe is composed of one or more unique pure substances called what? Read this paragraph and choose the correct option from the provided answers: The Levels of Organization To study the chemical level of organization, scientists consider the simplest building blocks of matter: subatomic particles, atoms and molecules. All matter in the universe is composed of one or more unique pure substances called elements, familiar examples of which are hydrogen, oxygen, carbon, nitrogen, calcium, and iron. The smallest unit of any of these pure substances (elements) is an atom. Atoms are made up of subatomic particles such as the proton, electron and neutron. Two or more atoms combine to form a molecule, such as the water molecules, proteins, and sugars found in living things. Molecules are the chemical building blocks of all body structures. Choices: - atoms - molecules - compounds - elements A:
| elements | 0 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
(Question)
Q: What is the branch of science that studies the physical world? Read this paragraph and choose the correct option from the provided answers: What is physics ? Physics is the branch of science that studies the physical world, including objects as small as subatomic particles and as large as galaxies. It studies the nature of matter and energy and how they interact. Physicists are inquisitive people who want to know the causes of what they see. How does the moon move? Why does the moon move? Why do the stars shine? Why do your hands get warm when you rub them together? Physicists, like all scientists, hope to find explanations that describe more than one phenomenon and offer a better understanding of how the universe works. Choices: - social science - botany - Ecology - physics A:
(Answer)
physics
(Question)
Q: What two measurements are multiplied to find the area of a rectangle? Read this paragraph and choose the correct option from the provided answers: Assume you are finding the area of a rectangle with a length of 6.8 m and a width of 6.9 m. When you multiply the length by the width on your calculator, the answer you get is 46.92 m 2 . Is this the correct answer? No; the correct answer is 46.9 m 2 . The correct answer must be rounded down so there is just one digit to the right of the decimal point. That’s because the answer cannot have more digits to the right of the decimal point than any of the original measurements. Using extra digits implies a greater degree of precision than actually exists. The correct number of digits is called the number of significant figures . To learn more about significant figures and rounding, you can watch the videos at the URLs below. Choices: - depth and width - volume and mass - length and depth - length and width A:
(Answer)
length and width
(Question)
Q: An axe head and a doorstop are types of what simple machine? Read this paragraph and choose the correct option from the provided answers: The axe head and the doorstop are both examples of a wedge, a type of simple machine. Choices: - pulley - blade - lever - wedge A:
(Answer)
| wedge | 6 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Ques:Q: What are surrounded by a cell wall consisting of peptidoglycan? Read this paragraph and choose the correct option from the provided answers: Bacteria are surrounded by a cell wall consisting of peptidoglycan . This complex molecule consists of sugars and amino acids. The cell wall is important for protecting bacteria. The cell wall is so important that some antibiotics, such as penicillin, kill bacteria by preventing the cell wall from forming. Choices: - viruses - protozoa - amoeba - bacteria A:
Ans:bacteria
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Ques:Q: What is the term for vascular plants that reproduce with seeds? Read this paragraph and choose the correct option from the provided answers: Seed plants are vascular plants that reproduce with seeds. Modern seed plants are called spermatophytes. Seeds allow the plants to reproduce without water. Most vascular plants today are seed plants. Choices: - Reproductive Plants - mother plants - strain plants - seed plants A:
Ans:seed plants
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Ques:Q: Lattice energy cannot be measured directly. what is its calculation based on? Read this paragraph and choose the correct option from the provided answers: There are a number of different ways to measure the strength of a given crystal lattice. One way would be to measure the amount of energy needed to completely pull apart an ionic substance into isolated ions. This value, known as the lattice energy , cannot be measured directly, but it can be calculated based on measured energy changes for other more feasible processes. The lattice energy of an ionic solid provides us with one way to measure the relative strength of the ionic bonds in that compound. Table below shows the lattice energies for various ionic substances:. Choices: - chemical reactions - change in temperature - microscopic inspection - measured energy changes A:
Ans:measured energy changes
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Ques:Q: What are the different feeding positions in a food chain or web called? Read this paragraph and choose the correct option from the provided answers: The different feeding positions in a food chain or web are called trophic levels. Generally, there are no more than four trophic levels because energy and biomass decrease from lower to higher levels. Choices: - neural levels - Primary Level - convoluted levels - trophic levels A:
Ans: | trophic levels
----- | 9 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
(Q).
Q: Which disease does the bacteria salmonella cause in humans? Read this paragraph and choose the correct option from the provided answers: The organisms are bacteria called Salmonella. If the word Salmonella rings a bell, that’s probably because Salmonella causes human diseases such as food poisoning. Many other types of bacteria also cause human diseases. But not all bacteria are harmful to people. In fact, we could not survive without many of the trillions of bacteria that live in or on the human body. You will learn why when you read this chapter. Choices: - water poisioning - blood poisoning - skin poisoning - food poisoning A:
(A).
food poisoning
(Q).
Q: What is the stage between a zygote and polyp? Read this paragraph and choose the correct option from the provided answers: Cnidarians in the polyp form usually reproduce asexually. One type of asexual reproduction in polyps leads to the formation of new medusae. Medusae usually reproduce sexually with sperm and eggs. Fertilization forms a zygote. The zygote develops into a larva, and the larva develops into a polyp. There are many variations on this general life cycle. Obviously, species that exist only as polyps or medusae have a life cycle without the other form. Choices: - pupa - egg - worm - larva A:
(A).
larva
(Q).
Q: Fertilization occurs when what material from one flower reaches the female gametes in the same or a different flower? Read this paragraph and choose the correct option from the provided answers: Pea plants reproduce sexually. The male gametes are released by tiny grains of pollen. The female gametes lie deep within the flowers. Fertilization occurs when pollen from one flower reaches the female gametes in the same or a different flower. This is called pollination . Mendel was able to control which plants pollinated each other. He transferred pollen by hand from flower to flower. Choices: - ova - nitrogen - sperm - pollen A:
(A).
| pollen | 8 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
(Q).
Q: What is the study of the energy transformations that occur in a collection of matter? Read this paragraph and choose the correct option from the provided answers: Choices: - fluctuations - geophysics - kinetics - thermodynamics A:
(A).
thermodynamics
(Q).
Q: How do glucose, ions, and other larger molecules leave the blood? Read this paragraph and choose the correct option from the provided answers: 20.3 | Capillary Exchange By the end of this section, you will be able to: • Identify the primary mechanisms of capillary exchange • Distinguish between capillary hydrostatic pressure and blood colloid osmotic pressure, explaining the contribution of each to net filtration pressure • Compare filtration and reabsorption • Explain the fate of fluid that is not reabsorbed from the tissues into the vascular capillaries The primary purpose of the cardiovascular system is to circulate gases, nutrients, wastes, and other substances to and from the cells of the body. Small molecules, such as gases, lipids, and lipid-soluble molecules, can diffuse directly through the membranes of the endothelial cells of the capillary wall. Glucose, amino acids, and ions—including sodium, potassium, calcium, and chloride—use transporters to move through specific channels in the membrane by facilitated diffusion. Glucose, ions, and larger molecules may also leave the blood through intercellular clefts. Larger molecules can pass through the pores of fenestrated capillaries, and even large plasma proteins can pass through the great gaps in the sinusoids. Some large proteins in blood plasma can move into and out of the endothelial cells packaged within vesicles by endocytosis and exocytosis. Water moves by osmosis. Choices: - through cell membranes - through capillary tips - through veinous fissures - through intercellular clefts A:
(A).
through intercellular clefts
(Q).
Q: What are are segmented invertebrates in phylum annelida called? Read this paragraph and choose the correct option from the provided answers: Annelids are segmented invertebrates in Phylum Annelida. They include earthworms, polychaete worms, and leeches. Annelids have a coelom and several organ systems. Their body segments may have a variety of different structures such as tentacles or suckers. Annelids may be predators, parasites, filter feeders, or decomposers. Choices: - flatworms - fungi - corals - annelids A:
(A).
| annelids | 8 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Ques: Q: What are the large segments of the earth’s crust that ordinarily move very slowly? Read this paragraph and choose the correct option from the provided answers: Tectonic plates are large segments of the Earth’s crust that move slowly. Suppose that one such plate has an average speed of 4.0 cm/year. (a) What distance does it move in 1 s at this speed? (b) What is its speed in kilometers per million years? 10. (a) Refer to Table 1.3 to determine the average distance between the Earth and the Sun. Then calculate the average speed of the Earth in its orbit in kilometers per second. (b) What is this in meters per second?. Choices: - ocean plates - lava plates - distinct plates - tectonic plates A:
Ans: tectonic plates
Ques: Q: The strength of an acid depends on how many of which ions it produces when it dissolves in water? Read this paragraph and choose the correct option from the provided answers: The strength of an acid depends on how many hydrogen ions it produces when it dissolves in water. A stronger acid produces more hydrogen ions than a weaker acid. For example, sulfuric acid (H 2 SO 4 ), which is found in car batteries, is a strong acid because nearly all of it breaks down into ions when it dissolves in water. On the other hand, acetic acid (CH 3 CO 2 H), which is the acid in vinegar, is a weak acid because less than 1 percent of it breaks down into ions in water. Choices: - silicon - carbon - helium - hydrogen A:
Ans: hydrogen
Ques: Q: The polymerase chain reaction is a way of making copies of what? Read this paragraph and choose the correct option from the provided answers: The polymerase chain reaction is a way of making copies of a gene. It uses high temperatures and an enzyme to make new DNA molecules. The process keeps cycling to make many copies of a gene. Choices: - an enzyme - a method - a form - a gene A:
Ans: a gene
Ques: Q: Unlike plants, animal species rely almost exclusively on what type of reproduction? Read this paragraph and choose the correct option from the provided answers: Introduction Plants have evolved different reproductive strategies for the continuation of their species. Some plants reproduce sexually, and others asexually, in contrast to animal species, which rely almost exclusively on sexual reproduction. Plant sexual reproduction usually depends on pollinating agents, while asexual reproduction is independent of these agents. Flowers are often the showiest or most strongly scented part of plants. With their bright colors, fragrances, and interesting shapes and sizes, flowers attract insects, birds, and animals to serve their pollination needs. Other plants pollinate via wind or water; still others self-pollinate. Choices: - pollination - multiplication - regeneration - sexual reproduction A:
Ans: | sexual reproduction | 7 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Ques: Q: Reactive elements are able to combine more what with other elements? Read this paragraph and choose the correct option from the provided answers: Reactive elements combine easily with other elements. This explains why they usually exist in nature in compounds rather than in pure form. Choices: - slowly - quickly - symmetrically - easily A:
Ans: easily
Ques: Q: Chemical symbols are useful to concisely represent the elements present in a substance. the letters usually come from the name of what? Read this paragraph and choose the correct option from the provided answers: Chemical symbols are useful to concisely represent the elements present in a substance. The letters usually come from the name of the element. Choices: - month - scientist - discoverer - element A:
Ans: element
Ques: Q: What is the area where an electron is most likely to be found called? Read this paragraph and choose the correct option from the provided answers: wave functions can predict within a certain level of probability where an electron might be at any given time. The area where an electron is most likely to be found is called its orbital. Recall that the Bohr model depicts an atom’s electron shell configuration. Within each electron shell are subshells, and each subshell has a specified number of orbitals containing electrons. While it is impossible to calculate exactly where an electron is located, scientists know that it is most probably located within its orbital path. Subshells are designated by the letter s, p, d, and f. The s subshell is spherical in shape and has one orbital. Principal shell 1n has only a single s orbital, which can hold two electrons. Principal shell 2n has one s and one p subshell, and can hold a total of eight electrons. The p subshell has three dumbbell-shaped orbitals, as illustrated in Figure 2.8. Subshells d and f have more complex shapes and contain five and seven orbitals, respectively. These are not shown in the illustration. Principal shell 3n has s, p, and d subshells and can hold 18 electrons. Principal shell 4n has s, p, d and f orbitals and can hold 32 electrons. Moving away from the nucleus, the number of electrons and orbitals found in the energy levels increases. Progressing from one atom to the next in the periodic table, the electron structure can be worked out by fitting an extra electron into the next available orbital. Choices: - neutron - proton - neucleus - orbital A:
Ans: orbital
Ques: Q: What reflex is commonly tested in newborn infants to establish the presence of neuromuscular function? Read this paragraph and choose the correct option from the provided answers: Approximate colors are shown, along with pKin values and the pH range over which the color changes. It is important to be aware that an indicator does not change color abruptly at a particular pH value; instead, it actually undergoes a pH titration just like any other acid or base. As the concentration of HIn decreases and the concentration of In− increases, the color of the solution slowly changes from the characteristic color of HIn to that of In−. As we will see in Section 16.6 "Buffers", the [In−]/[HIn] ratio changes from 0.1 at a pH one unit below pKin to 10 at a pH one unit above pKin. Thus most indicators change color over a pH range of about two pH units. We have stated that a good indicator should have a pKin value that is close to the expected pH at the equivalence point. For a strong acid–strong base titration, the choice of the indicator is not especially critical due to the very large change in pH that occurs around the equivalence point. In contrast, using the Saylor URL: http://www. saylor. org/books. Choices: - phalanges - renal - glandular - plantar A:
Ans: | plantar | 7 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Question: Q: The smallest cyclic ether is called what? Read this paragraph and choose the correct option from the provided answers: The smallest cyclic ether is called an epoxide. Draw its structure. Choices: - aldehyde - quark - peroxidase - epoxide A:
Answer: epoxide
Question: Q: The sugar of one nucleotide binds to what group of the next nucleotide? Read this paragraph and choose the correct option from the provided answers: The sugar of one nucleotide binds to the phosphate group of the next nucleotide. Alternating sugars and phosphate groups form the backbone of a nucleotide chain, as shown in Figure below . The bases, which are bound to the sugars, protrude from the backbone of the chain. In DNA, pairs of bases-one from each of two nucleotides-form the middle section of the molecule. Choices: - the alkaline - the chloride - the protein - the phosphate A:
Answer: the phosphate
Question: Q: Sickle cell anemia is what type of disorder? Read this paragraph and choose the correct option from the provided answers: Sickle-Shaped and Normal Red Blood Cells. Sickle cell anemia is an autosomal recessive disorder. The mutation that causes the disorder affects just one amino acid in a single protein, but it has serious consequences for the affected person. This photo shows the sickle shape of red blood cells in people with sickle cell anemia. Choices: - autosomal dominant disorder - spontaneous mutation - nongenetic disorder - autosomal recessive disorder A:
Answer: | autosomal recessive disorder | 3 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Ques: Q: What is the clear, protective covering on the outside of the eye? Read this paragraph and choose the correct option from the provided answers: First, light passes through the cornea of the eye. The cornea is a clear, protective covering on the outside of the eye. Choices: - retina - vitreous fluid - iris - cornea A:
Ans: cornea
Ques: Q: Common wisdom has it that the temporal bone (temporal = “time”) is so named because this area of the head (the temple) is where hair typically first turns gray, indicating the passage of what? Read this paragraph and choose the correct option from the provided answers: Temporal Bone The temporal bone forms the lower lateral side of the skull (see Figure 7.5). Common wisdom has it that the temporal bone (temporal = “time”) is so named because this area of the head (the temple) is where hair typically first turns gray, indicating the passage of time. The temporal bone is subdivided into several regions (Figure 7.7). The flattened, upper portion is the squamous portion of the temporal bone. Below this area and projecting anteriorly is the zygomatic process of the temporal bone, which forms the posterior portion of the zygomatic arch. Posteriorly is the mastoid portion of the temporal bone. Projecting inferiorly from this region is a large prominence, the mastoid process, which serves as a muscle attachment site. The mastoid process can easily be felt on the side of the head just behind your earlobe. On the interior of the skull, the petrous portion of each. Choices: - birth - ships - wealth - time A:
Ans: time
Ques: Q: What structure supports the body, protects internal organs, produces blood cells, and maintains mineral homeostasis? Read this paragraph and choose the correct option from the provided answers: The skeleton supports the body, protects internal organs, produces blood cells, and maintains mineral homeostasis. Choices: - fossil - skin - cuticle - skeleton A:
Ans: skeleton
Ques: Q: The contents of which organ are mixed every 20 seconds? Read this paragraph and choose the correct option from the provided answers: Choices: - the metabolism - pancreas - kidney - the stomach A:
Ans: | the stomach | 7 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
*Question*
Q: What type of interspecies relationship involves one party being actively harmed? Read this paragraph and choose the correct option from the provided answers: Symbiosis is a close relationship between two species in which at least one species benefits. Mutualism is a symbiotic relationship in which both species benefit. Commensalism is a symbiotic relationship in which one species benefits while the other species is not affected. Parasitism is a symbiotic relationship in which one species (the parasite) benefits while the other species (the host) is harmed. Choices: - mosaicism - symbiosis - mutualism - parasitism A:
**Answer**
parasitism
*Question*
Q: The differing glycosidic linkages in starch and cellulose give the two molecules what kind of distinct shapes? Read this paragraph and choose the correct option from the provided answers: Choices: - square - one-dimensional - diamond - three-dimensional A:
**Answer**
three-dimensional
*Question*
Q: What is the science that describes the ancestral and descendant connections between organisms? Read this paragraph and choose the correct option from the provided answers: Building Phylogenetic Trees with Analysis of DNA Sequence Alignments All living organisms display patterns of relationships derived from their evolutionary history. Phylogeny is the science that describes the relative connections between organisms, in terms of ancestral and descendant species. Phylogenetic trees, such as the plant evolutionary history shown in Figure 26.7, are tree-like branching diagrams that depict these relationships. Species are found at the tips of the branches. Each branching point, called a node, is the point at which a single taxonomic group (taxon), such as a species, separates into two or more species. Choices: - experimentally - organic science - polygamy - phylogeny A:
**Answer**
phylogeny
*Question*
Q: Neurologists are physicians who specialize in disorders of what system? Read this paragraph and choose the correct option from the provided answers: Neurologist Neurologists are physicians who specialize in disorders of the nervous system. They diagnose and treat disorders such as epilepsy, stroke, dementia, nervous system injuries, Parkinson’s disease, sleep disorders, and multiple sclerosis. Neurologists are medical doctors who have attended college, medical school, and completed three to four years of neurology residency. When examining a new patient, a neurologist takes a full medical history and performs a complete physical exam. The physical exam contains specific tasks that are used to determine what areas of the brain, spinal cord, or peripheral nervous system may be damaged. For example, to check whether the hypoglossal nerve is functioning correctly, the neurologist will ask the patient to move his or her tongue in different ways. If the patient does not have full control over tongue movements, then the hypoglossal nerve may be damaged or there may be a lesion in the brainstem where the cell bodies of these neurons reside (or there could be damage to the tongue muscle itself). Neurologists have other tools besides a physical exam they can use to diagnose particular problems in the nervous system. If the patient has had a seizure, for example, the neurologist can use electroencephalography (EEG), which involves taping electrodes to the scalp to record brain activity, to try to determine which brain regions are involved in the seizure. In suspected stroke patients, a neurologist can use a computerized tomography (CT) scan, which is a type of X-ray, to look for bleeding in the brain or a possible brain tumor. To treat patients with neurological problems, neurologists can prescribe medications or refer the patient to a neurosurgeon for surgery. Choices: - digestive system - musculoskeletal system - circulatory system - nervous system A:
**Answer**
| nervous system | 4 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Q: Nearly all weather occurs in the lower part of what? Read this paragraph and choose the correct option from the provided answers: All weather takes place in the atmosphere. Nearly all of it in the lower atmosphere. Weather refers to the conditions of the atmosphere at a given time and place. Climate is the average of weather over a long time. Choices: - the mesosphere - the ionosphere - the lithosphere - the atmosphere A:
the atmosphere
Q: What third property is different if two boxes have the same volume but one has greater mass? Read this paragraph and choose the correct option from the provided answers: A: Both boxes have the same volume because they are the same size. However, the books have greater mass than the feathers. Therefore, the box of books has greater density. Choices: - oxygen - output - diameter - density A:
density
Q: Where do the cells in your body get oxygen from? Read this paragraph and choose the correct option from the provided answers: All the cells of your body need oxygen, which they get from red blood cells. Red blood cells, in turn, get oxygen in the lungs. The lungs are the main organs of the respiratory system. The respiratory system is the body system that exchanges gases with the outside air. It brings air containing oxygen into the body for the cells. It also releases carbon dioxide from the cells into the air. Choices: - white blood cells - the digestive system - pores - red blood cells A:
red blood cells
Q: What is located at the center of our solar system? Read this paragraph and choose the correct option from the provided answers: Choices: - a black hole - the moon - the earth - the sun A:
| the sun | 0 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
(Q).
Q: Where are sensors for thermoregulation concentrated in the brain? Read this paragraph and choose the correct option from the provided answers: Choices: - thyroid - pituitary gland - medulla - the hypothalamus A:
(A).
the hypothalamus
(Q).
Q: Shivering and adipose tissue called brown fat are used by mammals in particular to produce what? Read this paragraph and choose the correct option from the provided answers: Many animals, especially mammals, use metabolic waste heat as a heat source. When muscles are contracted, most of the energy from the ATP used in muscle actions is wasted energy that translates into heat. Severe cold elicits a shivering reflex that generates heat for the body. Many species also have a type of adipose tissue called brown fat that specializes in generating heat. Choices: - energy - blood - nutrition - heat A:
(A).
heat
(Q).
Q: The barrier defenses are not a response to infections, but they are continuously working to protect against a broad range of what? Read this paragraph and choose the correct option from the provided answers: environment of the body’s soft tissues. Barrier defenses are part of the body’s most basic defense mechanisms. The barrier defenses are not a response to infections, but they are continuously working to protect against a broad range of pathogens. The different modes of barrier defenses are associated with the external surfaces of the body, where pathogens may try to enter (Table 21.2). The primary barrier to the entrance of microorganisms into the body is the skin. Not only is the skin covered with a layer of dead, keratinized epithelium that is too dry for bacteria in which to grow, but as these cells are continuously sloughed off from the skin, they carry bacteria and other pathogens with them. Additionally, sweat and other skin secretions may lower pH, contain toxic lipids, and physically wash microbes away. Choices: - mates - nutrients - ecosystems - pathogens A:
(A).
| pathogens | 8 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Ques: Q: The cells within meristems divide relatively frequently, generating additional what? Read this paragraph and choose the correct option from the provided answers: Choices: - proteins - chlorophyll - photosynthesis - cells A:
Ans: cells
Ques: Q: Warming conditions and, perhaps, human activities contributed to what fate of many organisms of the pleistocene era? Read this paragraph and choose the correct option from the provided answers: Many of the organisms that made up the Pleistocene megafauna went extinct as conditions warmed. Some may have been driven to extinction by human activities. Choices: - overpopulation - accumulation - evolution - extinction A:
Ans: extinction
Ques: Q: What is a thick, dark brown or black liquid found in rock layers of the earth's crust? Read this paragraph and choose the correct option from the provided answers: Oil is a thick, dark brown or black liquid. It is found in rock layers of Earth's crust. Oil is currently the most commonly used source of energy in the world. Choices: - propane - fossil fuel - coal - oil A:
Ans: oil
Ques: Q: What term simply means sensitive beyond normal levels of activation? Read this paragraph and choose the correct option from the provided answers: Hypersensitivities The word “hypersensitivity” simply means sensitive beyond normal levels of activation. Allergies and inflammatory responses to nonpathogenic environmental substances have been observed since the dawn of history. Hypersensitivity is a medical term describing symptoms that are now known to be caused by unrelated mechanisms of immunity. Still, it is useful for this discussion to use the four types of hypersensitivities as a guide to understand these mechanisms (Figure 21.28). Choices: - hyposensitivity - isosensitivity - monosensitivity - hypersensitivity A:
Ans: | hypersensitivity | 7 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Ques: Q: The rock of the mantle is mostly what? Read this paragraph and choose the correct option from the provided answers: The rock of the mantle is mostly peridotite. Peridotite is formed of crystals of olivine (green) and pyroxene (black). Choices: - metamorphic - crystalline - silicon - peridotite A:
Ans: peridotite
Ques: Q: What term means a reproductive cell, like the human egg in females? Read this paragraph and choose the correct option from the provided answers: This represents a human egg, which is the gamete, or reproductive cell, in females. Notice that is does not have a distinct shape, like a sperm cell has. The egg is a round cell with a haploid nucleus in the center. The egg contains most of the cytoplasm and organelles present in the first cell of a new organism. Choices: - embryo - zygote - sperm - gamete A:
Ans: gamete
Ques: Q: What is it called when breaks in bone occur that is usually caused by excessive stress on the bone? Read this paragraph and choose the correct option from the provided answers: Fractures are breaks in bone, usually caused by excessive stress on bone. Fractures heal when osteoblasts form new bone. The animation at this link shows how this happens: http://www. youtube. com/watch?v=qVougiCEgH8 . Soon after a fracture, the body begins to repair the break. The area becomes swollen and sore. Within a few days, bone cells travel to the break site and begin to rebuild the bone. It takes about two to three months before compact and spongy bone form at the break site. Sometimes the body needs extra help in repairing a broken bone. In such a case, a surgeon will piece a broken bone together with metal pins. Moving the broken pieces together will help keep the bone from moving and give the body a chance to repair the break. Choices: - fragments - faults - ruptures - fractures A:
Ans: fractures
Ques: Q: At equilibrium reactants and what are equally abundant? Read this paragraph and choose the correct option from the provided answers: Reactants and products are equally abundant at equilibrium. Choices: - results - proactives - minerals - products A:
Ans: | products | 7 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Q: Q: What kind of energy comes from the position of a charged particle in an electric field? Read this paragraph and choose the correct option from the provided answers: Electric potential energy comes from the position of a charged particle in an electric field. For example, when two negative charges are close together, they have potential energy because they repel each other and have the potential to push apart. If the charges actually move apart, their potential energy decreases. Electric charges always move spontaneously from a position where they have higher potential energy to a position where they have lower potential energy. This is like water falling over a dam from an area of higher to lower potential energy due to gravity. Choices: - solar energy - mechanical energy - thermal energy - potential energy A:
A: potential energy
Q: Q: The cell body contains what central structure along with other organelles? Read this paragraph and choose the correct option from the provided answers: The cell body contains the nucleus and other organelles. Choices: - neutron - protons - electron - nucleus A:
A: nucleus
Q: Q: What is the main component of phytoplankton? Read this paragraph and choose the correct option from the provided answers: Algae play significant roles as producers in aquatic ecosystems. Microscopic forms live suspended in the water column. They are the main component of phytoplankton . As such, they contribute to the food base of most marine ecosystems. Choices: - sponge - coral - seawater - algae A:
A: algae
Q: Q: What is the method of reproduction for echinoderms? Read this paragraph and choose the correct option from the provided answers: Echinoderms generally reproduce by external fertilization; regeneration is fairly common among echinoderms. Choices: - pollination - internal fertilization - fragmentation - external fertilization A:
| A: external fertilization | 2 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Q: What kind of mouthparts do aphids have? Read this paragraph and choose the correct option from the provided answers: Some insects, such as aphids, have piercing-sucking mouthparts. Other insects, like grasshoppers, have chewing mouthparts. Choices: - chewing mouthparts - sponging mouthparts - siphoning mouthparts - piercing-sucking mouthparts A:
piercing-sucking mouthparts
Q: Through which part of the body do most animals take in oxygen? Read this paragraph and choose the correct option from the provided answers: Choices: - ears - rectum - nose - mouth A:
mouth
Q: On top of the otolithic membrane is a layer of calcium carbonate crystals, called what? Read this paragraph and choose the correct option from the provided answers: Equilibrium (Balance) Along with audition, the inner ear is responsible for encoding information about equilibrium, the sense of balance. A similar mechanoreceptor—a hair cell with stereocilia—senses head position, head movement, and whether our bodies are in motion. These cells are located within the vestibule of the inner ear. Head position is sensed by the utricle and saccule, whereas head movement is sensed by the semicircular canals. The neural signals generated in the vestibular ganglion are transmitted through the vestibulocochlear nerve to the brain stem and cerebellum. The utricle and saccule are both largely composed of macula tissue (plural = maculae). The macula is composed of hair cells surrounded by support cells. The stereocilia of the hair cells extend into a viscous gel called the otolithic membrane (Figure 14.11). On top of the otolithic membrane is a layer of calcium carbonate crystals, called otoliths. The otoliths essentially make the otolithic membrane top-heavy. The otolithic membrane moves separately from the macula in response to head movements. Tilting the head causes the otolithic membrane to slide over the macula in the direction of gravity. The moving otolithic membrane, in turn, bends the sterocilia, causing some hair cells to depolarize as others hyperpolarize. The exact position of the head is interpreted by the brain based on the pattern of hair-cell depolarization. Choices: - cones - gonads - calcites - otoliths A:
otoliths
Q: What can demonstrate the decrease in energy, biomass or numbers within an ecosystem? Read this paragraph and choose the correct option from the provided answers: Ecological pyramids can demonstrate the decrease in energy, biomass or numbers within an ecosystem. Energy pyramids are discussed at http://www. youtube. com/watch?v=8T2nEMzk6_E (1:44). Choices: - biomes - spontaneous mutation - food chains - ecological pyramids A:
| ecological pyramids | 0 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Q: A wave that consists of vibrating electric and magnetic fields is called what? Read this paragraph and choose the correct option from the provided answers: An electromagnetic wave is a wave that consists of vibrating electric and magnetic fields. A familiar example will help you understand the fields that make up an electromagnetic wave. Think about a common bar magnet. It exerts magnetic force in an area surrounding it, called the magnetic field. You can see the magnetic field of a bar magnet in Figure below . Because of this force field, a magnet can exert force on objects without touching them. They just have to be in its magnetic field. An electric field is similar to a magnetic field (see Figure below ). An electric field is an area of electrical force surrounding a charged particle. Like a magnetic field, an electric field can exert force on objects over a distance without actually touching them. Choices: - mechanical wave - thermal wave - propagate wave - electromagnetic wave A:
electromagnetic wave
Q: What does blood pickup from the lungs to be carried throughout the rest of the body? Read this paragraph and choose the correct option from the provided answers: The blood picks up oxygen in the lungs and carries it to cells throughout the body. Choices: - carbon - white blood cells - platelets - oxygen A:
oxygen
Q: What color does red litmus paper turn in the presence of a base? Read this paragraph and choose the correct option from the provided answers: Like strong acids, strong bases can be harmful to organisms and damaging to materials. Bases have a bitter taste and feel slimy to the touch. They can also burn the skin. Bases, like acids, can be identified with litmus paper. Bases turn red litmus paper blue. Choices: - green - purple - white - blue A:
blue
Q: What kind of pipettes are suitable for measuring very small amounts of liquids? Read this paragraph and choose the correct option from the provided answers: Pipettes are small, but important tools in many biology labs. Micropipettes, such as the ones shown here, are calibrated to measure very small amounts of liquids. For example, 100 microliters (100 µL) is about half the volume of your little finger tip; or even 1 µL, which is much smaller than a drop of water. Choices: - clutch pipettes - macropipettes - frozen pipettes - micropipettes A:
| micropipettes | 0 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Q: Q: The vagina connects to which internal organ? Read this paragraph and choose the correct option from the provided answers: The vagina is a cylinder-shaped organ found inside of the female body. One end of the vagina opens at the outside of the body. The other end joins with the uterus. During sexual intercourse, sperm may be released into the vagina. If this occurs, the sperm will move through the vagina and into the uterus. During birth, a baby passes from the uterus to the vagina to leave the body. Choices: - artery - valves - ovaries - uterus A:
A: uterus
Q: Q: What is the smallest main part of the brain? Read this paragraph and choose the correct option from the provided answers: The brain stem is the smallest of the three main parts of the brain. It lies directly under the cerebrum. The brain stem controls basic body functions, such as breathing, heartbeat, and digestion. The brain stem also carries information back and forth between the cerebrum and spinal cord. Choices: - the cortex - the claw - the cerebellum - the stem A:
A: the stem
Q: Q: Water can be boiled to kill giardia and most other what? Read this paragraph and choose the correct option from the provided answers: Different pathogens spread in different ways. Some pathogens spread through food. They cause food borne illnesses, which are discussed in a previous concept. Some pathogens spread through water. Giardia lamblia is one example. Water can be boiled to kill Giardia and most other pathogens. Choices: - parasites - bacteria - germs - pathogens A:
A: pathogens
Q: Q: The plants alternation between haploid and diploud generations allow it to do what? Read this paragraph and choose the correct option from the provided answers: All plants have a characteristic life cycle that includes alternation of generations . Plants alternate between haploid and diploid generations. Alternation of generations allows for both asexual and sexual reproduction. Asexual reproduction with spores produces haploid individuals called gametophytes . Sexual reproduction with gametes and fertilization produces diploid individuals called sporophytes . A typical plant’s life cycle is diagrammed in Figure below . Choices: - reproduce asexually and simultaneously - reproduce sexually and autonomously - reproduce asexually and biologically - reproduce asexually and sexually A:
| A: reproduce asexually and sexually | 2 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
(Question)
Q: What term describes the rate at which a device changes electric current to another form of energy? Read this paragraph and choose the correct option from the provided answers: The rate at which a device changes electric current to another form of energy is called electric power . The SI unit of power—including electric power—is the watt. A watt equals 1 joule of energy per second. High wattages are often expressed in kilowatts, where 1 kilowatt equals 1000 watts. The power of an electric device, such as a microwave, can be calculated if you know the current and voltage of the circuit. This equation shows how power, current, and voltage are related:. Choices: - kilowatts - voltage - kinetic energy - electric power A:
(Answer)
electric power
(Question)
Q: Most of the pathogens that cause stis enter the body through mucous membranes of which organs? Read this paragraph and choose the correct option from the provided answers: Most of the pathogens that cause STIs enter the body through mucous membranes of the reproductive organs. All sexual behaviors that involve contact between mucous membranes put a person at risk for infection. This includes vaginal, anal, and oral sexual behaviors. Many STIs can also be transmitted through body fluids such as blood, semen, and breast milk. Therefore, behaviors such as sharing injection or tattoo needles is another way these STIs can spread. Choices: - eyes - kidneys - stomach - reproductive organs A:
(Answer)
reproductive organs
(Question)
Q: All chordates are deuterostomes possessing a what? Read this paragraph and choose the correct option from the provided answers: Figure 29.2 All chordates are deuterostomes possessing a notochord. Choices: - zygote - hydrochord - endoderm - notochord A:
(Answer)
| notochord | 6 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Question: Q: The concentration of hydronium ions in a solution is known as what? Read this paragraph and choose the correct option from the provided answers: The concentration of hydronium ions in a solution is known as acidity . In pure water, the concentration of hydronium ions is very low; only about 1 in 10 million water molecules naturally breaks down to form a hydronium ion. As a result, pure water is essentially neutral. Acidity is measured on a scale called pH , as shown in Figure below . Pure water has a pH of 7, so the point of neutrality on the pH scale is 7. Choices: - base - akaline - pH value - acidity A:
Answer: acidity
Question: Q: Any organism that causes disease is called what? Read this paragraph and choose the correct option from the provided answers: You have ten times as many bacterial cells as human cells in your body. Luckily for you, most of these bacteria are harmless. However, some of them can cause disease. Any organism that causes disease is called a pathogen . Diseases caused by bacterial pathogens include food poisoning, strep throat, and Lyme disease. Choices: - a parasite - a virus - a microbe - a pathogen A:
Answer: a pathogen
Question: Q: What term means the amount of space matter takes up? Read this paragraph and choose the correct option from the provided answers: The amount of space matter takes up is its volume . How the volume of matter is measured depends on its state. Choices: - weight - density - mass - volume A:
Answer: | volume | 3 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Q: What is a specific region in space within which a sensory receptor is responsive to stimuli? Read this paragraph and choose the correct option from the provided answers: CHAPTER SUMMARY 36.1 Sensory Processes A sensory activation occurs when a physical or chemical stimulus is processed into a neural signal (sensory transduction) by a sensory receptor. Perception is an individual interpretation of a sensation and is a brain function. Humans have special senses: olfaction, gustation, equilibrium, and hearing, plus the general senses of somatosensation. Sensory receptors are either specialized cells associated with sensory neurons or the specialized ends of sensory neurons that are a part of the peripheral nervous system, and they are used to receive information about the environment (internal or external). Each sensory receptor is modified for the type of stimulus it detects. For example, neither gustatory receptors nor auditory receptors are sensitive to light. Each sensory receptor is responsive to stimuli within a specific region in space, which is known as that receptor’s receptive field. The most fundamental function of a sensory system is the translation of a sensory signal to an electrical signal in the nervous system. All sensory signals, except those from the olfactory system, enter the central nervous system and are routed to the thalamus. When the sensory signal exits the thalamus, it is conducted to the specific area of the cortex dedicated to processing that particular sense. Choices: - deceptive field - amplify field - symmetrical field - receptive field A:
receptive field
------
Q: What are boggy regions with thick layers of peat called? Read this paragraph and choose the correct option from the provided answers: Choices: - wetlands - tropics - meadows - peatlands A:
peatlands
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Q: What is the structure in a diploid sporophyte that undergoes meiosis to form haploid spores? Read this paragraph and choose the correct option from the provided answers: A general plant life cycle is represented by the diagram in Figure below . From the figure, you can see that the diploid sporophyte has a structure called a sporangium (plural, sporangia) that undergoes meiosis to form haploid spores. A spore develops into a haploid gametophyte. The gametophyte has male or female reproductive organs that undergo mitosis to form haploid gametes (sperm or eggs). Fertilization of gametes produces a diploid zygote. The zygote grows and develops into a mature sporophyte, and the cycle repeats. Choices: - hymenium - dikaryotic - hyphae - sporangium A:
sporangium
------
Q: About 20 percent of carbon dioxide is bound by hemoglobin and is transported where? Read this paragraph and choose the correct option from the provided answers: Carbaminohemoglobin About 20 percent of carbon dioxide is bound by hemoglobin and is transported to the lungs. Carbon dioxide does not bind to iron as oxygen does; instead, carbon dioxide binds amino acid moieties on the globin portions of hemoglobin to form carbaminohemoglobin, which forms when hemoglobin and carbon dioxide bind. When hemoglobin is not transporting oxygen, it tends to have a bluish-purple tone to it, creating the darker maroon color typical of deoxygenated blood. The following formula depicts this reversible reaction:. Choices: - brain tissues - intestines - bones - lungs A:
| lungs
------ | 5 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Ques: Q: What is the final stage of aerobic respiration? Read this paragraph and choose the correct option from the provided answers: Electron transport is the final stage of aerobic respiration. In this stage, energy from NADH and FADH 2 is transferred to ATP. Choices: - electron production - proton transport - glucose transport - electron transport A:
Ans: electron transport
Ques: Q: What is a simple sugar such as fructose or glucose? Read this paragraph and choose the correct option from the provided answers: A monosaccharide is a simple sugar such as fructose or glucose. Fructose is found in fruits, whereas glucose generally results from the digestion of other carbohydrates. Glucose is used for energy by the cells of most organisms. Choices: - disaccharide - polysaccharides - galactose - monosaccharide A:
Ans: monosaccharide
Ques: Q: All atoms of the same element have the same number of what? Read this paragraph and choose the correct option from the provided answers: Atomic Number In the 1910s, experiments with X rays led to this useful conclusion: the magnitude of the positive charge in the nucleus of every atom of a particular element is the same. In other words, all atoms of the same element have the same number of protons. Furthermore,. Choices: - electrons - molecules - charge - protons A:
Ans: protons
Ques: Q: What is a force that opposes motion? Read this paragraph and choose the correct option from the provided answers: Friction is a force that opposes motion. Any two objects in contact have what is called a mutual coefficient of friction. To find the force of friction between them, we multiply the normal force by this coefficient. Like the forces above, it arises due to electromagnetic interactions of atoms in two objects. There are actually two coefficients of friction: static and kinetic. Static friction will oppose initial motion of two objects relative to each other. Once the objects are moving, however, kinetic friction will oppose their continuing motion. Kinetic friction is lower than static friction, so it is easier to keep an object in motion than to set it in motion. There are some things about friction that are not very intuitive:. Choices: - tension - momentum - thrust - friction A:
Ans: | friction | 7 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
(Q).
Q: What substances affect the brain and influence how a person feels, thinks, or acts? Read this paragraph and choose the correct option from the provided answers: Psychoactive drugs affect the brain and influence how a person feels, thinks, or acts. They include medicines and other legal drugs as well as illegal drugs. They may stimulate or depress the central nervous system. Abuse of such drugs may lead to drug addiction, overdose, and death. Choices: - H2 blockers - primeval drugs or drugs - amphetamines - psychoactive drugs or drugs A:
(A).
psychoactive drugs or drugs
(Q).
Q: Luster, malleability, ductility, and conductivity are all properties of which kind of material? Read this paragraph and choose the correct option from the provided answers: The image above is of a copper plate that was made in 1893. The utensil has a great deal of elaborate decoration and the item is very useful. What would have happened if we decided that copper (I) chloride was just as good a material (well, it does have copper in it). The CuCl would end up as a powder when we pounded on it to shape it. Metals behave in unique ways. The bonding that occurs in a metal is responsible for its distinctive properties: luster, malleability, ductility, and excellent conductivity. Choices: - ores - wood - nonmetals - metals A:
(A).
metals
(Q).
Q: Nearly all weather occurs in the lower part of what? Read this paragraph and choose the correct option from the provided answers: All weather takes place in the atmosphere. Nearly all of it in the lower atmosphere. Weather refers to the conditions of the atmosphere at a given time and place. Climate is the average of weather over a long time. Choices: - the mesosphere - the ionosphere - the lithosphere - the atmosphere A:
(A).
| the atmosphere | 8 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
(Question)
Q: By pulling out grass by its roots and over-grazing, livestock contribute to what negative process? Read this paragraph and choose the correct option from the provided answers: As pictured below ( Figure below ), some grazing animals, especially sheep and goats, eat grass right down to the roots. They may even pull the grass entirely out of the ground. Grazing animals can kill the grass. They may thin it out so much that it offers little protection to the soil. If animals are kept in the same place too long, the soil may become completely bare. The bare soil is easily eroded by wind and water. Choices: - migration - evolution - immigration - erosion A:
(Answer)
erosion
(Question)
Q: The reactions between alkali metals and water are particularly vigorous and include the rapid production of large quantities of what gas? Read this paragraph and choose the correct option from the provided answers: All alkali metals are very soft and can be cut easily with a knife. Due to their high reactivity, they must be stored under oil to prevent them from reacting with oxygen or water vapor in the air. The reactions between alkali metals and water are particularly vigorous and include the rapid production of large quantities of hydrogen gas. Alkali metals also react easily with most nonmetals. All of the alkali metals are far too reactive to be found in nature in their pure elemental form. For example, all naturally occurring sodium exists as a compound, such as sodium chloride (table salt). Choices: - helium - oxygen - carbon - hydrogen A:
(Answer)
hydrogen
(Question)
Q: What process does not cause a rock to melt completely, instead causing the minerals to change by heat or pressure? Read this paragraph and choose the correct option from the provided answers: Metamorphism does not cause a rock to melt completely. It only causes the minerals to change by heat or pressure. Choices: - sedimentation - oxidation - igneous extrusion - metamorphism A:
(Answer)
| metamorphism | 6 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
(Question)
Q: What bonds form when pairs of electrons are shared? Read this paragraph and choose the correct option from the provided answers: Choices: - ionized bonds - neutron bonds - dissonance bonds - covalent bonds A:
(Answer)
covalent bonds
(Question)
Q: What is the hardest type of coal? Read this paragraph and choose the correct option from the provided answers: 5. Anthracite is the hardest type of coal because it is metamorphic. Anthracite causes less pollution when it burns. Why do you think that is?. Choices: - Bituminous - lignite - peat - anthracite A:
(Answer)
anthracite
(Question)
Q: What is the main reason for weather change? Read this paragraph and choose the correct option from the provided answers: Weather is always changing. One day might be cold and cloudy. The next day might be warm and sunny. Even on the same day, the weather can change a lot. A beautiful morning might be followed by a stormy afternoon. Why does weather change? The main reason is moving air masses. Choices: - climate change - moving energy masses - seasons - moving air masses A:
(Answer)
| moving air masses | 6 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Q: What do we consider the basic building blocks of life? Read this paragraph and choose the correct option from the provided answers: Cells are the basic building blocks of life. They are like tiny factories where virtually all life processes take place. Some living things, like the bacteria in Figure above , consist of just one cell. They are called single-celled organisms. You can see other single-celled organisms in Figure 2.2. Some living things are composed of a few to many trillions of cells. They are called multicellular organisms. Your body is composed of trillions of cells. Choices: - atoms - neurons - muscles - cells A:
cells
Q: In most animals, the circulatory system is used to transport blood through the what? Read this paragraph and choose the correct option from the provided answers: CHAPTER SUMMARY 40.1 Overview of the Circulatory System In most animals, the circulatory system is used to transport blood through the body. Some primitive animals use diffusion for the exchange of water, nutrients, and gases. However, complex organisms use the circulatory system to carry gases, nutrients, and waste through the body. Circulatory systems may be open (mixed with the interstitial fluid) or closed (separated from the interstitial fluid). Closed circulatory systems are a characteristic of vertebrates; however, there are significant differences in the structure of the heart and the circulation of blood between the different vertebrate groups due to adaptions during evolution and associated differences in anatomy. Fish have a two-chambered heart with unidirectional circulation. Amphibians have a three-chambered heart, which has some mixing of the blood, and they have double circulation. Most non-avian reptiles have a three-chambered heart, but have little mixing of the blood; they have double circulation. Mammals and birds have a four-chambered heart with no mixing of the blood and double circulation. Choices: - fur - stratum corneum - nerves - body A:
body
Q: What state of matter completes the list: solid, liquid, gas? Read this paragraph and choose the correct option from the provided answers: A snowflake is made of ice, or water in the solid state. A solid is one of four well-known states of matter. The other three states are liquid, gas, and plasma. Compared with these other states of matter, solids have particles that are much more tightly packed together. The particles are held rigidly in place by all the other particles around them so they can’t slip past one another or move apart. This gives solids a fixed shape and a fixed volume. Choices: - energy - ice - power - plasma A:
| plasma | 1 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Ques:Q: Fungi may have both asexual and sexual stages of what? Read this paragraph and choose the correct option from the provided answers: Figure 24.8 Fungi may have both asexual and sexual stages of reproduction. Choices: - absorption - development - photosynthesis - reproduction A:
Ans:reproduction
-----
Ques:Q: What are the salts of fatty acids called? Read this paragraph and choose the correct option from the provided answers: Soaps and Detergents Pioneers made soap by boiling fats with a strongly basic solution made by leaching potassium carbonate, K2CO3, from wood ashes with hot water. Animal fats contain polyesters of fatty acids (long-chain carboxylic acids). When animal fats are treated with a base like potassium carbonate or sodium hydroxide, glycerol and salts of fatty acids such as palmitic, oleic, and stearic acid are formed. The salts of fatty acids are called soaps. The sodium salt of stearic acid, sodium stearate, has the formula C17H35CO2Na and contains an uncharged nonpolar hydrocarbon chain, the C17H35— unit, and an ionic carboxylate group, the — CO 2 − unit (Figure 11.32). Choices: - dyes - creams - malts - soaps A:
Ans:soaps
-----
Ques:Q: In science, what can be described as a set of steps that help us to answer questions? Read this paragraph and choose the correct option from the provided answers: The scientific method is a set of steps that help us to answer questions. When we use logical steps and control the number of things that can be changed, we get better answers. As we test our ideas, we may come up with more questions. The basic sequence of steps followed in the scientific method is illustrated in Figure below . Choices: - theory - hypothesis - scientific controls - scientific method A:
Ans:scientific method
-----
Ques:Q: How many people die from air pollution each year? Read this paragraph and choose the correct option from the provided answers: Air pollution is harmful to human beings and other living things. About 22 million people die from air pollution each year. Breathing polluted air increases the risk of developing lung diseases such as asthma and lung cancer. Breathing bad air also increases the chances of dying from other diseases. Children are most likely to be affected by air pollution. That’s because their lungs are still developing and growing. Children also take in more air for their size than adults do. Some air pollutants damage the environment as well as the health of living things. The type of damage depends on the pollutant. Air pollution can also harm the environment. Choices: - 14 million - 17 million - 5 million - 22 million A:
Ans: | 22 million
----- | 9 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
*Question*
Q: Metamorphic rocks form when an existing rock is changed by heat or what? Read this paragraph and choose the correct option from the provided answers: Metamorphic rocks form when an existing rock is changed by heat or pressure. The minerals in the rock change but do not melt. The rock experiences these changes within the Earth. Choices: - radiation - chemical reaction - cold - pressure A:
**Answer**
pressure
*Question*
Q: The ph scale is a scale used to express the concentration of hydrogen ions in solution. a neutral solution, neither acidic nor basic, has a ph of what? Read this paragraph and choose the correct option from the provided answers: dissociated ions. It is a dynamic equilibrium because acid and base molecules are constantly dissociating into ions and reassociating into neutral molecules. The pH scale is a scale used to express the concentration of hydrogen ions in solution. A neutral solution, neither acidic nor basic, has a pH of 7. Acidic solutions have a pH lower than 7, while basic solutions have a pH higher than 7. Buffers are solutions that resist dramatic changes in pH when an acid or a base is added to them. They contain a weak acid and a salt of that weak acid, or a weak base and a salt of that weak base. When a buffer is present, any strong acid reacts with the anion of the salt, forming a weak acid and minimizing the presence of hydrogen ions in solution. Any strong base reacts with the weak acid, minimizing the amount of additional hydroxide ions in solution. However, buffers only have limited capacity; there is a limit to the amount of strong acid or strong base any given amount of buffer will react with. Choices: - 6 - 0 - 8 - 7 A:
**Answer**
7
*Question*
Q: Cells must also be able to separate their relatively stable interior from what? Read this paragraph and choose the correct option from the provided answers: Cells share the same needs: the need to get energy from their environment, the need to respond to their environment, and the need to reproduce. Cells must also be able to separate their relatively stable interior from the ever-changing external environment. They do this by coordinating many processes that are carried out within organelles, or other cellular structures. Structures that are common to many different cells indicate the common history shared by cell-based life. Examples of these common structures include the components of both the cell (or plasma) membrane and the cytoskeleton, and other structures shown in Figure above . Choices: - their habitat - predators - competition and chaos - the external environment A:
**Answer**
the external environment
*Question*
Q: What are large glaciers that cover a larger area than just a valley? Read this paragraph and choose the correct option from the provided answers: Ice caps are large glaciers that cover a larger area than just a valley. An ice cap can bury an entire mountain range or region ( Figure below ). Glaciers come off of ice caps into valleys. Choices: - icebergs - glacial continents - ice floes - ice caps A:
**Answer**
| ice caps | 4 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
*Question*
Q: Programmed cell death is also known as? Read this paragraph and choose the correct option from the provided answers: Choices: - suicide - sepsis - necrosis - apoptosis A:
**Answer**
apoptosis
*Question*
Q: Red blood cells, white blood cells and what other cell is found in blood? Read this paragraph and choose the correct option from the provided answers: Blood consists of liquid plasma, which contains dissolved substances, and three types of cells: red blood cells, white blood cells, and platelets. The main function of blood is transport. Blood also fights infections, repairs tissues, controls pH, and helps regulate body temperature. Choices: - hemoglobin - plasma cells - antibodies - platelets A:
**Answer**
platelets
*Question*
Q: What gives the body shape and support? Read this paragraph and choose the correct option from the provided answers: The skeleton supports the body and gives it shape. It has several other functions as well, including:. Choices: - organs - muscles - gravity - skeleon A:
**Answer**
skeleon
*Question*
Q: The two ovaries are small, oval organs on either side of what part of the body? Read this paragraph and choose the correct option from the provided answers: The two ovaries are small, oval organs on either side of the uterus. Each ovary contains thousands of eggs, with about 1-2 million immature eggs present at birth and 40,000 immature eggs present at puberty, as most of the eggs die off. The eggs do not fully develop until a female has gone through puberty. About once a month, on average one egg completes development and is released by the ovary. The ovaries also secrete estrogen , the main female sex hormone. Choices: - lungs - heart - pancreas - uterus A:
**Answer**
| uterus | 4 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Q: What collect data on the land and sea in regards to the weather? Read this paragraph and choose the correct option from the provided answers: Weather stations collect data on land and sea. Weather balloons, satellites, and radar collect data in the atmosphere. Choices: - turbine stations - thermal stations - wind stations - weather stations A:
weather stations
Q: What are the most common seedless vascular plants? Read this paragraph and choose the correct option from the provided answers: Ferns are the most common seedless vascular plants ( Figure below ). They usually have large divided leaves called fronds. In most ferns, fronds develop from a curled-up formation called a fiddlehead ( Figure below ). The fiddlehead looks like the curled decoration on the end of a stringed instrument, such as a fiddle. Leaves unroll as the fiddleheads grow and expand. Ferns grow in a variety of habitats, ranging in size from tiny aquatic species to giant tropical plants. Choices: - trees - grasses - weeds - ferns A:
ferns
Q: The fight or flight response involves what system? Read this paragraph and choose the correct option from the provided answers: Figure 15.1 Fight or Flight? Though the threats that modern humans face are not large predators, the autonomic nervous system is adapted to this type of stimulus. The modern world presents stimuli that trigger the same response. (credit: Vernon Swanepoel). Choices: - functional nervous system - cellular nervous system - voluntary nervous system - autonomic nervous system A:
| autonomic nervous system | 1 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Q: Electrons move, but they aren’t destroyed. this is the law of conservation of what? Read this paragraph and choose the correct option from the provided answers: Like the formation of ions, the formation of charged matter in general depends on the transfer of electrons either between two materials or within a material. Three ways this can occur are friction, conduction, and polarization. In all cases, the total charge remains the same. Electrons move, but they aren’t destroyed. This is the law of conservation of charge . Choices: - energy - cost - matter - charge A:
charge
------
Q: Silicon with an element that gives it extra electrons is which type of semiconductor? Read this paragraph and choose the correct option from the provided answers: An n-type (negative-type) semiconductor consists of silicon and an element such as phosphorus that gives the silicon crystal extra electrons. You can see this in the Figure above . An n-type semiconductor is like the negative terminal of a battery. Choices: - m. Type - i.g - type - k. - type - n-type A:
n-type
------
Q: Amylase and pepsin are examples of enzymes needed for what process? Read this paragraph and choose the correct option from the provided answers: More than 1000 different enzymes are necessary for human life. Many enzymes are needed for the digestion of food. Two examples are amylase and pepsin. Both are described in the Figure below . Choices: - fermentation - absorption - filtration - digestion A:
digestion
------
Q: What device is used to stop a current in a circuit? Read this paragraph and choose the correct option from the provided answers: Understand current as it passes through a series circuit. Choices: - a signal - a valve - a mirror - a switch A:
| a switch
------ | 5 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Ques:Q: Birds adapted wings and weathers for flight during what process? Read this paragraph and choose the correct option from the provided answers: Wings and feathers are two adaptations for flight that evolved in birds. Both are clearly displayed in the flying gull in Figure below . Wings evolved from the front limbs of a four-legged ancestor. The wings are controlled by large flight muscles in the chest. Feathers also help birds fly. They provide air resistance and lift. In addition, they provide insulation and serve other roles. Choices: - migration - variation - emergence - evolution A:
Ans:evolution
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Ques:Q: In an endothermic reaction, what is absorbed by the reaction? Read this paragraph and choose the correct option from the provided answers: Because energy is a product, energy is given off by the reaction. Therefore, this reaction is exothermic. Because energy is a reactant, energy is absorbed by the reaction. Therefore, this reaction is endothermic. Choices: - food - fuel - atoms - energy A:
Ans:energy
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Ques:Q: In contrast to mammals and birds, freshwater fishes produce large volumes of very dilute what? Read this paragraph and choose the correct option from the provided answers: Choices: - nitrogen - feces - blood - urine A:
Ans:urine
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Ques:Q: What is the term for a resource that is used in a way that meets the needs of the present without keeping future generations from meeting their needs? Read this paragraph and choose the correct option from the provided answers: A resource is renewable if it is remade by natural processes at the same rate that humans use it up. Sunlight and wind are renewable resources because they will not be used up ( Figure below ). The rising and falling of ocean tides is another example of a resource in unlimited supply. A sustainable resource is a resource that is used in a way that meets the needs of the present without keeping future generations from meeting their needs. People can sustainably harvest wood, cork, and bamboo. Farmers can also grow crops sustainably by not planting the same crop in their soil year after year. Planting the same crop each year can remove nutrients from the soil. This means that wood, cork, bamboo, and crops can be sustainable resources. Choices: - tolerable - innovative - structural - sustainable A:
Ans: | sustainable
----- | 9 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
*Question*
Q: Electrons always result in what? Read this paragraph and choose the correct option from the provided answers: The addition of electrons always results in an anion that is larger than the parent atom. When the electrons outnumber the protons, the overall attractive force that the protons have for the electrons is decreased. The electron cloud also spreads out because more electrons results in greater electron-electron repulsions. Notice that the group 16 ions are larger than the group 17 ions. The group 16 elements each add two electrons while the group 17 elements add one electron per atom for form the anions. Choices: - A HYPER-PIGMENTATION THAT IS LARGER THAN THE PARENT ATOM - an contraposition that is larger than the parent atom - an dissociative that is larger than the parent atom - an anion that is larger than the parent atom A:
**Answer**
an anion that is larger than the parent atom
*Question*
Q: How many pairs of legs do arachnids have? Read this paragraph and choose the correct option from the provided answers: Arachnids have four pairs of legs, specialized appendages, and a fused head and thorax. Choices: - 8 - 6 - ten - 4 A:
**Answer**
4
*Question*
Q: What flows across the membrane resulting in changes in the membrane potential? Read this paragraph and choose the correct option from the provided answers: Choices: - electrons - acids - neutrons - ions A:
**Answer**
ions
*Question*
Q: What are the attractive forces that occur between polar molecules called? Read this paragraph and choose the correct option from the provided answers: Dipole-dipole forces are the attractive forces that occur between polar molecules. A molecule of hydrogen chloride has a partially positive hydrogen atom and a partially negative chlorine atom. In a collection of many hydrogen chloride molecules, they will align themselves so that the oppositely charged regions of neighboring molecules are near each other. Choices: - induced-dipole forces - particle - dipole forces - ion-dipole forces - dipole-dipole forces A:
**Answer**
| dipole-dipole forces | 4 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Ques: Q: What is the major cause of disease in agricultural crops? Read this paragraph and choose the correct option from the provided answers: Some fungi have a different kind of relationship with plants. They are plant parasites. They get food from the plants and cause harm to the plants in return. Fungi are the major causes of disease in agricultural crops. They may eventually kill their plant hosts. Choices: - bacteria - drought - pollution - fungi A:
Ans: fungi
Ques: Q: The trade winds are nearest what? Read this paragraph and choose the correct option from the provided answers: The wind belts have names. The Trade Winds are nearest the equator. The next belt is the westerlies. Finally are the polar easterlies. The names are the same in both hemispheres. Choices: - boundary plates - poles - inland - equator A:
Ans: equator
Ques: Q: In which specific organs are hormonal cells located? Read this paragraph and choose the correct option from the provided answers: Hormones Maintaining homeostasis within the body requires the coordination of many different systems and organs. One mechanism of communication between neighboring cells, and between cells and tissues in distant parts of the body, occurs through the release of chemicals called hormones. Hormones are released into body fluids, usually blood, which carries them to their target cells where they elicit a response. The cells that secrete hormones are often located in specific organs, called endocrine glands, and the cells, tissues, and organs that secrete hormones make up the endocrine system. Examples of endocrine organs include the pancreas, which produces the hormones insulin and glucagon to regulate blood-glucose levels, the adrenal glands, which produce hormones such as epinephrine and norepinephrine that regulate responses to stress, and the thyroid gland, which produces thyroid hormones that regulate metabolic rates. The endocrine glands differ from the exocrine glands. Exocrine glands secrete chemicals through ducts that lead outside the gland (not to the blood). For example, sweat produced by sweat glands is released into ducts that carry sweat to the surface of the skin. The pancreas has both endocrine and exocrine functions because besides releasing hormones into the blood. It also produces digestive juices, which are carried by ducts into the small intestine. Choices: - mammary glands - lymph nodes - spinal cord - endocrine glands A:
Ans: endocrine glands
Ques: Q: What is the body cavity that reptiles have that is involved in reproduction? Read this paragraph and choose the correct option from the provided answers: Most reptiles have sexual reproduction with internal fertilization. Reptiles have a body cavity called a cloaca that is involved in reproduction. Sperm or eggs are released into an adult reptile’s cloaca. Males have one or two penises that pass sperm from their cloaca to the eggs in the cloaca of a female, where fertilization takes place. In most reptile species, once fertilized the eggs leave the body through an opening in the cloaca. These reptiles are oviparous. Eggs develop and hatch outside the mother’s body. Choices: - hypothalamus - pristil - ovules - cloaca A:
Ans: | cloaca | 7 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
*Question*
Q: Algae are similar to plants in that they both produce their food through what process? Read this paragraph and choose the correct option from the provided answers: Why are algae considered plant-like? The main reason is that they contain chloroplasts and produce food through photosynthesis. However, they lack many other structures of true plants. For example, algae do not have roots, stems, or leaves. Some algae also differ from plants in being motile. They may move with pseudopods or flagella. Although not plants themselves, algae were probably the ancestors of plants. Choices: - mitosis - cell division - hydrolysis - photosynthesis A:
**Answer**
photosynthesis
*Question*
Q: Which kind of irrigation uses much less water than other methods? Read this paragraph and choose the correct option from the provided answers: Drip irrigation uses much less water than other methods. Choices: - constant - mist - solar - drip A:
**Answer**
drip
*Question*
Q: What organisms use cilia, pseudopods, or flagella to move? Read this paragraph and choose the correct option from the provided answers: Protists use cilia, pseudopods, or flagella to move. Choices: - bacteria - arthropods - prokaryotes - protists A:
**Answer**
protists
*Question*
Q: The process of breaking down food into nutrients is known as __________ Read this paragraph and choose the correct option from the provided answers: As food is pushed through the GI tract by peristalsis, it undergoes digestion. Digestion is the process of breaking down food into nutrients. There are two types of digestion: mechanical digestion and chemical digestion. Choices: - energy - absorption - filtration - digestion A:
**Answer**
| digestion | 4 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Q: Common among mammals and insects, pheromones are often related to what type of behavior? Read this paragraph and choose the correct option from the provided answers: Choices: - aggressive - immune - cardiac - reproductive A:
reproductive
Q: Transport vesicles move what type of molecules from the rough endoplasmic reticulum to the golgi apparatus? Read this paragraph and choose the correct option from the provided answers: Transport vesicles are part of the endomembrane system. They are able to move molecules such as proteins between locations inside the cell. For example, transport vesicles move proteins from the rough endoplasmic reticulum to the Golgi apparatus. Choices: - acids - lipids - hormones - proteins A:
proteins
Q: If humans were to artificially intervene and fertilize the egg of a bald eagle with the sperm of an african fish eagle and a chick did hatch, that offspring, called a hybrid (a cross between two species), would probably be this? Read this paragraph and choose the correct option from the provided answers: In other cases, individuals may appear similar although they are not members of the same species. For example, even though bald eagles (Haliaeetus leucocephalus) and African fish eagles (Haliaeetus vocifer) are both birds and eagles, each belongs to a separate species group (Figure 18.10). If humans were to artificially intervene and fertilize the egg of a bald eagle with the sperm of an African fish eagle and a chick did hatch, that offspring, called a hybrid (a cross between two species), would probably be infertile—unable to successfully reproduce after it reached maturity. Different species may have different genes that are active in development; therefore, it may not be possible to develop a viable offspring with two different sets of directions. Thus, even though hybridization may take place, the two species still remain separate. Choices: - fertile - nonviable - mutated - infertile A:
| infertile | 1 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Ques: Q: What term refers to the sequence of community and ecosystem changes after a disturbance? Read this paragraph and choose the correct option from the provided answers: Choices: - progressions - disturbance succession - physiological succession - ecological succession A:
Ans: ecological succession
Ques: Q: What kind of tests may detect substances associated with particular disorders? Read this paragraph and choose the correct option from the provided answers: Choices: - hormonal - electrical - genetic - biochemical A:
Ans: biochemical
Ques: Q: What is the study of rock strata called? Read this paragraph and choose the correct option from the provided answers: The study of rock strata is called stratigraphy . The laws of stratigraphy can help scientists understand Earth’s past. The laws of stratigraphy are usually credited to a geologist from Denmark named Nicolas Steno. He lived in the 1600s. The laws are illustrated in the Figure below ; refer to the figure as you read about Steno's laws below. Choices: - biochemistry - chemistry - biology - stratigraphy A:
Ans: stratigraphy
Ques: Q: What is the most important characteristic of a homogeneous mixture? Read this paragraph and choose the correct option from the provided answers: A homogeneous mixture is a mixture in which the composition is uniform throughout the mixture. The salt water described above is homogeneous because the dissolved salt is evenly distributed throughout the entire salt water sample. Often it is easy to confuse a homogeneous mixture with a pure substance because they are both uniform. The difference is that the composition of the substance is always the same. The amount of salt in the salt water can vary from one sample to another. All solutions would be considered homogeneous because the dissolved material is present in the same amount throughout the solution. Choices: - very reactive - high density - nonreactive - uniform composition throughout A:
Ans: | uniform composition throughout | 7 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
(Q).
Q: A lymphocyte is the type of which cell involved in an immune system response? Read this paragraph and choose the correct option from the provided answers: A lymphocyte is the type of white blood cell involved in an immune system response. You can see what a lymphocyte looks like, greatly magnified, in Figure below . Lymphocytes make up about one quarter of all white blood cells, but there are trillions of them in the human body. Usually, fewer than half of the body’s lymphocytes are in the blood. The majority are in the lymph, lymph nodes, and lymph organs. Choices: - red blood cell - white immunity cell - white brain cell - white blood cell A:
(A).
white blood cell
(Q).
Q: During which phase do sister chromatids separate and the centromeres divide? Read this paragraph and choose the correct option from the provided answers: During anaphase , sister chromatids separate and the centromeres divide. The sister chromatids are pulled apart by the shortening of the spindle fibers. This is like reeling in a fish by shortening the fishing line. One sister chromatid moves to one pole of the cell, and the other sister chromatid moves to the opposite pole. At the end of anaphase, each pole of the cell has a complete set of chromosomes. Choices: - cell phase - gap cycle - passivation - anaphase A:
(A).
anaphase
(Q).
Q: The scientific method is a method of research with defined steps that include experiments and careful what? Read this paragraph and choose the correct option from the provided answers: that have taken place during this time. There are however, areas of knowledge and human experience that the methods of science cannot be applied to. These include such things as answering purely moral questions, aesthetic questions, or what can be generally categorized as spiritual questions. Science has cannot investigate these areas because they are outside the realm of material phenomena, the phenomena of matter and energy, and cannot be observed and measured. The scientific method is a method of research with defined steps that include experiments and careful observation. The steps of the scientific method will be examined in detail later, but one of the most important aspects of this method is the testing of hypotheses. A hypothesis is a suggested explanation for an event, which can be tested. Hypotheses, or tentative explanations, are generally produced within the context of a scientific theory. A scientific theory is a generally accepted, thoroughly tested and confirmed explanation for a set of observations or phenomena. Scientific theory is the foundation of scientific knowledge. In addition, in many scientific disciplines (less so in biology) there are scientific laws, often expressed in mathematical formulas, which describe how elements of nature will behave under certain specific conditions. There is not an evolution of hypotheses through theories to laws as if they represented some increase in certainty about the world. Hypotheses are the day-to-day material that scientists work with and they are developed within the context of theories. Laws are concise descriptions of parts of the world that are amenable to formulaic or mathematical description. Natural Sciences What would you expect to see in a museum of natural sciences? Frogs? Plants? Dinosaur skeletons? Exhibits about how the brain functions? A planetarium? Gems and minerals? Or maybe all of the above? Science includes such diverse fields as astronomy, biology, computer sciences, geology, logic, physics, chemistry, and mathematics (Figure... Choices: - discovery - estimation - consideration - observation A:
(A).
| observation | 8 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Q: What is the term for a period when temperatures are cooler than normal causing glaciers to spread to lower latitudes? Read this paragraph and choose the correct option from the provided answers: But ice ages also occurred many times in the past. An ice age is a period when temperatures are cooler than normal. This causes glaciers to spread to lower latitudes. Scientists think that ice ages occurred at least six times over the last billion years alone. How do scientists learn about Earth’s past climates?. Choices: - cooling era - cold age - freezing point - ice age A:
ice age
Q: In what form do plants and animals store sugar for later use? Read this paragraph and choose the correct option from the provided answers: Choices: - processing polysaccharides - management polysaccharides - carrying polysaccharides - storage polysaccharides A:
storage polysaccharides
Q: Atoms of different elements can combine in simple whole number ratios to form what? Read this paragraph and choose the correct option from the provided answers: Atoms of different elements can combine in simple whole number ratios to form chemical compounds. Choices: - mixtures - carbon compounds - combinations - chemical compounds A:
| chemical compounds | 1 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
*Question*
Q: What type of creature is noted for having its eyes at the tips of stalks or tentacles that emerge from its head? Read this paragraph and choose the correct option from the provided answers: Choices: - corals - arthropods - arachnids - gastropods A:
**Answer**
gastropods
*Question*
Q: The chemical behavior of elements can largely be explained by what? Read this paragraph and choose the correct option from the provided answers: The chemical behavior of elements can largely be explained by electron configurations. Choices: - chemical configuration - proton configuration - neutron configuration - electron configurations A:
**Answer**
electron configurations
*Question*
Q: The iconic gray mantle of the human brain, which appears to make up most of the mass of the brain, is called? Read this paragraph and choose the correct option from the provided answers: The Cerebrum The iconic gray mantle of the human brain, which appears to make up most of the mass of the brain, is the cerebrum (Figure 13.6). The wrinkled portion is the cerebral cortex, and the rest of the structure is beneath that outer covering. There is a large separation between the two sides of the cerebrum called the longitudinal fissure. It separates the cerebrum into two distinct halves, a right and left cerebral hemisphere. Deep within the cerebrum, the white matter of the corpus callosum provides the major pathway for communication between the two hemispheres of the cerebral cortex. Choices: - brain stem - lobes - thrombus - cerebrum A:
**Answer**
cerebrum
*Question*
Q: What do atoms form by sharing valence electrons? Read this paragraph and choose the correct option from the provided answers: Atoms form covalent bonds by sharing valence electrons. The valence electrons are located in atomic orbitals. However, when a bond forms, the structure of the atomic orbitals changes. In this lesson, we will see how the atomic orbitals interact to share valence electrons and form different types of covalent bonds. Choices: - phenotype bonds - neutron bonds - ionic bonds - covalent bonds A:
**Answer**
| covalent bonds | 4 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
(Question)
Q: What is an interesting example of a molecule with two central atoms, which are both c atoms? Read this paragraph and choose the correct option from the provided answers: Acetylene is an interesting example of a molecule with two central atoms, which are both C atoms. Polyatomic ions are bonded together with covalent bonds. Because they are ions, however, they participate in ionic bonding with other ions. So both major types of bonding can occur at the same time. Choices: - chloride - water - sulfur - acetylene A:
(Answer)
acetylene
(Question)
Q: "direct" and "alternating" are two kinds of what, which is associated with electricity? Read this paragraph and choose the correct option from the provided answers: 20.5 Alternating Current versus Direct Current Alternating Current Most of the examples dealt with so far, and particularly those utilizing batteries, have constant voltage sources. Once the current is established, it is thus also a constant. Direct current (DC) is the flow of electric charge in only one direction. It is the steady state of a constant-voltage circuit. Most well-known applications, however, use a time-varying voltage source. Alternating current (AC) is the flow of electric charge that periodically reverses direction. If the source varies periodically, particularly sinusoidally, the circuit is known as an alternating current circuit. Examples include the commercial and residential power that. Choices: - time - constant - levels - current A:
(Answer)
current
(Question)
Q: What is the name for the study of the plants and animals that live in fresh water bodies ? Read this paragraph and choose the correct option from the provided answers: Limnology is the study of the plants and animals that live in fresh water bodies. A lake has zones just like the ocean. The ecosystem of a lake is divided into three distinct zones ( Figure below ):. Choices: - nematology - oceanography - hydrology - limnology A:
(Answer)
| limnology | 6 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
(Q).
Q: Parasitic fungi often cause illness and may eventually do what to their hosts? Read this paragraph and choose the correct option from the provided answers: Parasitic fungi often cause illness and may eventually kill their host. They are the major cause of disease in agricultural plants. Fungi also parasitize animals, such as the insect pictured in Figure below . Fungi even parasitize humans. Did you ever have athelete’s foot? If so, you were the host of a parasitic fungus. Choices: - reproduce with them - mutate them - become them - kill them A:
(A).
kill them
(Q).
Q: Hair is a component of which bodily system? Read this paragraph and choose the correct option from the provided answers: Well maybe not yours. But some other person's. Hair is an integral part of the integumentary system. And although many people may lose some or all of the hair on top of their head, they still have hair on their arms and legs that perform important functions. Choices: - circulatory - relatable system - trypeta system - integumentary system A:
(A).
integumentary system
(Q).
Q: Some materials have negative heats of solution; the dissolution of one of these solutes in water is called? Read this paragraph and choose the correct option from the provided answers: Some materials have negative heats of solution; the dissolution of one of these solutes in water is an exothermic process. Heat is released, causing a net increase in the temperature of the solution. Conversely, other substances have positive heats of solution. For example, the dissolution of potassium nitrate in water is an endothermic process. The resulting absorption of energy causes the solution to become colder. Calculations involving heats of solutions follow the same basic approach that we have used with other enthalpy problems. Choices: - endothermic process - acetylene process - ionized process - exothermic process A:
(A).
| exothermic process | 8 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Q: What can be calculated given the mass and speed of an object? Read this paragraph and choose the correct option from the provided answers: Given the mass and speed of an object, calculate its kinetic energy. Choices: - harmonic energy - residual energy - systematic energy - kinetic energy A:
kinetic energy
------
Q: What is the final product of the calvin cycle? Read this paragraph and choose the correct option from the provided answers: The reactions of the Calvin cycle add carbon (from carbon dioxide in the atmosphere) to a simple five-carbon molecule called RuBP. These reactions use chemical energy from NADPH and ATP that were produced in the light reactions. The final product of the Calvin cycle is glucose. Choices: - energy - chloride - insulin - glucose A:
glucose
------
Q: What term describes scientists who debate the origin of the earliest plants? Read this paragraph and choose the correct option from the provided answers: Evolution of Angiosperms Undisputed fossil records place the massive appearance and diversification of angiosperms in the middle to late Mesozoic era. Angiosperms (“seed in a vessel”) produce a flower containing male and/or female reproductive structures. Fossil evidence (Figure 26.6) indicates that flowering plants first appeared in the Lower Cretaceous, about 125 million years ago, and were rapidly diversifying by the Middle Cretaceous, about 100 million years ago. Earlier traces of angiosperms are scarce. Fossilized pollen recovered from Jurassic geological material has been attributed to angiosperms. A few early Cretaceous rocks show clear imprints of leaves resembling angiosperm leaves. By the mid-Cretaceous, a staggering number of diverse flowering plants crowd the fossil record. The same geological period is also marked by the appearance of many modern groups of insects, including pollinating insects that played a key role in ecology and the evolution of flowering plants. Although several hypotheses have been offered to explain this sudden profusion and variety of flowering plants, none have garnered the consensus of paleobotanists (scientists who study ancient plants). New data in comparative genomics and paleobotany have, however, shed some light on the evolution of angiosperms. Rather than being derived from gymnosperms, angiosperms form a sister clade (a species and its descendents) that developed in parallel with the gymnosperms. The two innovative structures of flowers and fruit represent an improved reproductive strategy that served to protect the embryo, while increasing genetic variability and range. Paleobotanists debate whether angiosperms evolved from small woody bushes, or were basal angiosperms related to tropical grasses. Both views draw support from cladistics studies, and the so-called woody magnoliid hypothesis—which proposes that the early ancestors of angiosperms were shrubs—also offers molecular biological evidence. Choices: - specialists - archaebotanists - protobotanists - paleobotanists A:
paleobotanists
------
Q: Each pollen grain has two coverings: the exine (thicker, outer layer) and the what? Read this paragraph and choose the correct option from the provided answers: Each pollen grain has two coverings: the exine (thicker, outer layer) and the intine (Figure 32.7). The exine contains sporopollenin, a complex waterproofing substance supplied by the tapetal cells. Sporopollenin allows the pollen to survive under unfavorable conditions and to be carried by wind, water, or biological agents without undergoing damage. Female Gametophyte (The Embryo Sac) While the details may vary between species, the overall development of the female gametophyte has two distinct phases. First, in the process of megasporogenesis, a single cell in the diploid megasporangium—an area of tissue in the ovules—undergoes meiosis to produce four megaspores, only one of which survives. During the second phase, megagametogenesis, the surviving haploid megaspore undergoes mitosis to produce an eight-nucleate, seven-cell female gametophyte, also known as the megagametophyte or embryo sac. Two of the nuclei—the polar nuclei—move to the equator and fuse, forming a single, diploid central cell. This central cell later fuses with a sperm to form the triploid endosperm. Three nuclei position themselves on the end of the embryo sac opposite the micropyle and develop into the antipodal cells, which later degenerate. The nucleus closest to the micropyle becomes the female gamete, or egg cell, and the two adjacent nuclei develop into synergid cells (Figure 32.8). The synergids help guide the pollen tube for successful fertilization, after which they disintegrate. Once fertilization is complete, the resulting diploid zygote develops into the embryo, and the fertilized ovule forms the other tissues of the seed. Choices: - tube nucleus - pollen tube - cytoplasm - intine A:
| intine
------ | 5 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Question: Q: What force is caused by microscopic bumps, lumps, and imperfections colliding? Read this paragraph and choose the correct option from the provided answers: Every surface has microscopic bumps, lumps, and imperfections, emphasized as in the image above. If we try to slide the top block over the lower block, there will be numerous collisions as the bumps impact each other. The forward motion causes the collisions with bumps which then exert a force in opposite way the block is moving. The force of friction always opposes whatever motion is causing the friction. Choices: - gravitational - motion - tension - friction A:
Answer: friction
Question: Q: In which sphere of the atmosphere do the northern and southern lights occur? Read this paragraph and choose the correct option from the provided answers: The thermosphere is the layer above the mesosphere. Temperature increases with altitude in this layer. The northern and southern lights occur here. Choices: - lithosphere - stratosphere - ionosphere - thermosphere A:
Answer: thermosphere
Question: Q: How many additional pairs of appendages do arachnids have? Read this paragraph and choose the correct option from the provided answers: Arachnids also have two additional pairs of appendages. Describe these two pairs. Choices: - 0 - 4 - 6 - 2 A:
Answer: | 2 | 3 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Question: Q: Poetically speaking, nature reserves are islands of what, in a sea of habitat degraded by human activity? Read this paragraph and choose the correct option from the provided answers: Choices: - refuge - habitats - ecosystem - biodiversity A:
Answer: biodiversity
Question: Q: What consists of all the living things and nonliving things interacting in the same area? Read this paragraph and choose the correct option from the provided answers: An ecosystem consists of all the living things and nonliving things interacting in the same area. Choices: - biodiversity - habitat - biome - ecosystem A:
Answer: ecosystem
Question: Q: Designed to exchange materials, what spongy structure consists of membranes and blood vessels from both mother and embryo? Read this paragraph and choose the correct option from the provided answers: The placenta is a spongy structure. It consists of membranes and blood vessels from both mother and embryo (see Figure below ). The placenta passes oxygen, nutrients, and other useful substances from the mother to the fetus. It also passes carbon dioxide and other wastes from the fetus to the mother. The placenta lets blood from the fetus and mother exchange substances without actually mixing. Thus, it protects the fetus from being attacked by the mother’s immune system as a “foreign parasite. ”. Choices: - endometrium - uterus - umbilicus - placenta A:
Answer: | placenta | 3 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
(Question)
Q: What celestial object has been visited by manned spacecraft and is easily seen from earth? Read this paragraph and choose the correct option from the provided answers: The Moon is easily seen from Earth. Early astronomers used telescopes to study and map its surface. The Moon has also seen a great number of satellites, rovers, and orbiters. After all, it is relatively easy to get spacecraft to the satellite. Also, before humans could be safely sent to the Moon, many studies and experiments had to be completed. Choices: - venus - the Sun - Jupiter - moon A:
(Answer)
moon
(Question)
Q: What do fungi use to penetrate deep into decaying matter? Read this paragraph and choose the correct option from the provided answers: Most fungi get organic compounds from dead organisms. Fungi use their hyphae to penetrate deep into decaying organic matter. They produce enzymes at the tips of their hyphae. The enzymes digest the organic matter so the fungal cells can absorb it. Fungi are the main decomposers in forests. They are the only decomposers that can break down cellulose and wood. They have special enzymes for this purpose. Choices: - cilia - cytoplasm - flagella - hyphae A:
(Answer)
hyphae
(Question)
Q: What type of compounds make up the cells and tissues of organisms? Read this paragraph and choose the correct option from the provided answers: Biochemical compounds make up the cells and tissues of organisms. They are also involved in life processes, such as making and using food for energy. Given their diversity of functions, it’s not surprising that there are millions of different biochemical compounds. However, they can be grouped into just four main classes: carbohydrates, proteins, lipids, and nucleic acids. The classes are summarized in Table below and described in the rest of this lesson. Choices: - hormonal compounds - productive compounds - organic compounds - biochemical compounds A:
(Answer)
| biochemical compounds | 6 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Question: Q: Pressure is defined as the force per unit area on? Read this paragraph and choose the correct option from the provided answers: Pressure is defined as the force per unit area on a surface. Choices: - weight - gravity - speed - surface A:
Answer: surface
Question: Q: What is cellular respiration that proceeds in the presence of oxygen known as? Read this paragraph and choose the correct option from the provided answers: Cellular respiration that proceeds in the presence of oxygen is aerobic respiration. Choices: - kinetic respiration - digestive respiration - anaerobic respiration - aerobic respiration A:
Answer: aerobic respiration
Question: Q: What conducts nerve-like electrical signals that help integrate whole-plant function? Read this paragraph and choose the correct option from the provided answers: Choices: - the stem - the stamen - the spicule - the ploem A:
Answer: | the ploem | 3 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Question: Q: The chytrids the only class in the phylum chytridiomycota is the chytridiomycetes. the chytrids are the simplest and most primitive eumycota, or true this? Read this paragraph and choose the correct option from the provided answers: Chytridiomycota: The Chytrids The only class in the Phylum Chytridiomycota is the Chytridiomycetes. The chytrids are the simplest and most primitive Eumycota, or true fungi. The evolutionary record shows that the first recognizable chytrids appeared during the late preCambrian period, more than 500 million years ago. Like all fungi, chytrids have chitin in their cell walls, but one group of chytrids has both cellulose and chitin in the cell wall. Most chytrids are unicellular; a few form multicellular organisms and hyphae, which have no septa between cells (coenocytic). They produce gametes and diploid zoospores that swim with the help of a single flagellum. The ecological habitat and cell structure of chytrids have much in common with protists. Chytrids usually live in aquatic environments, although some species live on land. Some species thrive as parasites on plants, insects, or amphibians (Figure 24.10), while others are saprobes. The chytrid species Allomyces is well characterized as an experimental organism. Its reproductive cycle includes both asexual and sexual phases. Allomyces produces diploid or haploid flagellated zoospores in a sporangium. Choices: - acids - proteins - organisms - fungi A:
Answer: fungi
Question: Q: What is the term for the energy of motion, which is exhibited by the speed of an object? Read this paragraph and choose the correct option from the provided answers: The energy of motion is kinetic energy, KE. Whenever an object is in motion it has kinetic energy. The faster it is going, the more energy it has. Choices: - inertia - mechanical energy - residual energy - kinetic energy A:
Answer: kinetic energy
Question: Q: What make distant objects appear both nearer and larger? Read this paragraph and choose the correct option from the provided answers: Telescopes make distant objects appear both nearer and larger. You can see many more stars through a telescope than with the unaided eye. Choices: - astrolabes - mirrors - lasers - telescopes A:
Answer: | telescopes | 3 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Ques: Q: Cells in green algae divide along cell plates called what? Read this paragraph and choose the correct option from the provided answers: Streptophytes Until recently, all photosynthetic eukaryotes were considered members of the kingdom Plantae. The brown, red, and gold algae, however, have been reassigned to the Protista kingdom. This is because apart from their ability to capture light energy and fix CO2, they lack many structural and biochemical traits that distinguish plants from protists. The position of green algae is more ambiguous. Green algae contain the same carotenoids and chlorophyll a and b as land plants, whereas other algae have different accessory pigments and types of chlorophyll molecules in addition to chlorophyll a. Both green algae and land plants also store carbohydrates as starch. Cells in green algae divide along cell plates called phragmoplasts, and their cell walls are layered in the same manner as the cell walls of embryophytes. Consequently, land plants and closely related green algae are now part of a new monophyletic group called Streptophyta. The remaining green algae, which belong to a group called Chlorophyta, include more than 7000 different species that live in fresh or brackish water, in seawater, or in snow patches. A few green algae even survive on soil, provided it is covered by a thin film of moisture in which they can live. Periodic dry spells provide a selective advantage to algae that can survive water stress. Some green algae may already be familiar, in particular Spirogyra and desmids. Their cells contain chloroplasts that display a dizzying variety of shapes, and their cell walls contain cellulose, as do land plants. Some green algae are single cells, such as Chlorella and Chlamydomonas, which adds to the ambiguity of green algae classification, because plants are multicellular. Other algae, like Ulva (commonly called sea lettuce), form colonies (Figure 25.7). Choices: - chloroplasts - cellulose - xanthophylls - phragmoplasts A:
Ans: phragmoplasts
Ques: Q: What properties describe the existence of matter, as opposed to chemical properties that describe how substances change into other substances? Read this paragraph and choose the correct option from the provided answers: Physical properties describe the existence of matter, and chemical properties describe how substances change into other substances. Choices: - gravitational - astronomical - biological - physical A:
Ans: physical
Ques: Q: What type of molecules are secreted by the cell in local signaling? Read this paragraph and choose the correct option from the provided answers: Choices: - word molecules - negaitive molecules - sleeping molecules - messenger molecules A:
Ans: messenger molecules
Ques: Q: A machine is any device that makes work easier by doing what? Read this paragraph and choose the correct option from the provided answers: A machine is any device that makes work easier by changing a force. When you use a machine, you apply force to the machine. This force is called the input force. The machine, in turn, applies force to an object. This force is called the output force. Recall that work equals force multiplied by distance:. Choices: - moving things - changing molecules - removing barriers - changing a force A:
Ans: | changing a force | 7 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
(Question)
Q: Einstein’s equation helps scientists understand what happens in nuclear reactions and why they produce so much what? Read this paragraph and choose the correct option from the provided answers: Einstein’s equation helps scientists understand what happens in nuclear reactions and why they produce so much energy. When the nucleus of a radioisotope undergoes fission or fusion in a nuclear reaction, it loses a tiny amount of mass. What happens to the lost mass? It isn’t really lost at all. It is converted to energy. How much energy? E = mc 2 . The change in mass is tiny, but it results in a great deal of energy. Choices: - light - food - hydrogen - energy A:
(Answer)
energy
(Question)
Q: An unbalanced force on an object in motion causes what? Read this paragraph and choose the correct option from the provided answers: An object will not change its state of motion (i. e. , accelerate) unless an unbalanced force acts on it. Equal and oppositely directed forces on the same object do not produce acceleration. Choices: - agitation - velocity - vibration - acceleration A:
(Answer)
acceleration
(Question)
Q: The organ systems of the body work together to carry out life processes and maintain what? Read this paragraph and choose the correct option from the provided answers: The organ systems of the body work together to carry out life processes and maintain homeostasis. Choices: - movement - freshness - consciousness - homeostasis A:
(Answer)
| homeostasis | 6 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Q: Q: Halogens tend to form salts with what type of element? Read this paragraph and choose the correct option from the provided answers: Halogens have filled valence electron configurations. Halogens tend to form salts with metals. As the free elements, halogens are monatomic. Halogens have appreciable nonmetallic character. Halogens tend to have an oxidation state of −1. Halogens are good reductants. Choices: - nonmetals - metalloids - man-made - metals A:
A: metals
Q: Q: What kind of reproduction requires the fusion of male and female gametes? Read this paragraph and choose the correct option from the provided answers: Choices: - autonomous reproduction - asexual reproduction - subject reproduction - sexual reproduction A:
A: sexual reproduction
Q: Q: Chloroplasts, chromoplasts, and leucoplasts are all plastids, organelles found in what kind of cells? Read this paragraph and choose the correct option from the provided answers: Plastids are organelles in plant cells that may have various jobs. The main types of plastids are chloroplasts, chromoplasts, and leucoplasts. Choices: - animal cells - lung cells - heart cells - plant cells A:
A: plant cells
Q: Q: Distinguishing between homology and analogy is critical in reconstructing what? Read this paragraph and choose the correct option from the provided answers: Choices: - residues - phylums - proteases - phylogenies A:
| A: phylogenies | 2 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Ques: Q: What do corals secrete that builds up to become a coral reef? Read this paragraph and choose the correct option from the provided answers: Cnidarians include jellyfish and corals. They are aquatic invertebrates. They have tissues and radial symmetry. They also have tentacles with stingers. There are two cnidarian body plans: the polyp and the medusa. They differ in several ways. Many corals secrete an exoskeleton that builds up to become a coral reef. Choices: - membrane - mucous - scales - exoskeleton A:
Ans: exoskeleton
Ques: Q: What do you call the system of glands that release chemical messenger molecules into the bloodstream? Read this paragraph and choose the correct option from the provided answers: The nervous system isn’t the only message-relaying system of the human body. The endocrine system also carries messages. The endocrine system is a system of glands that release chemical messenger molecules into the bloodstream. The messenger molecules are hormones. Hormones act slowly compared with the rapid transmission of electrical messages by the nervous system. They must travel through the bloodstream to the cells they affect, and this takes time. On the other hand, because endocrine hormones are released into the bloodstream, they travel throughout the body. As a result, endocrine hormones can affect many cells and have body-wide effects. Choices: - homeostasis system - nervous system - limbic system - endocrine system A:
Ans: endocrine system
Ques: Q: What kind of reproduction results in offspring that are genetically unique? Read this paragraph and choose the correct option from the provided answers: Sexual reproduction results in infinite possibilities of genetic variation. In other words, sexual reproduction results in offspring that are genetically unique. They differ from both parents and also from each other. This occurs for a number of reasons. Choices: - budding - fragmentation - asexual reproduction - sexual reproduction A:
Ans: sexual reproduction
Ques: Q: What is it called when you touch a charged object to the earth? Read this paragraph and choose the correct option from the provided answers: The earth is also a conductor. Touching a charged object to the earth is called grounding . When you touch a conductor to the earth, you allow the earth to share the charge. Since the earth is billions of times bigger than the object, the earth takes nearly all of the charge. The charged object that was grounded now has zero charge. Choices: - cooling - charging - dispersion - grounding A:
Ans: | grounding | 7 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Q: What are the high points in a transverse wave called? Read this paragraph and choose the correct option from the provided answers: A transverse wave is characterized by the high and low points reached by particles of the medium as the wave passes through. The high points are called crests, and the low points are called troughs. You can see both in the Figure below . Choices: - apex - peaks - waves - crests A:
crests
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Q: What is produced when a colorless solution of lead nitrate is added to a colorless solution of potassium iodide? Read this paragraph and choose the correct option from the provided answers: When a colorless solution of lead(II) nitrate is added to a colorless solution of potassium iodide, a yellow solid called a precipitate is instantly produced ( Figure below ). A precipitate is a solid product that forms from a reaction and settles out of a liquid mixture. The formation of a precipitate may also indicate the occurrence of a chemical reaction. Choices: - blue solid precipitate - brown solid precipitate - purple solid precipitate - yellow solid precipitate A:
yellow solid precipitate
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Q: Solar cells convert the energy in sunlight to what type of energy? Read this paragraph and choose the correct option from the provided answers: Solar cells convert the energy in sunlight to electrical energy. Solar cells are also called photovoltaic (PV) cells because they use light ( photo- ) to produce voltage ( -voltaic ). Solar cells contain a material such as silicon that absorbs light energy. The energy knocks electrons loose so they can flow freely and produce a difference in electric potential energy, or voltage. The flow of electrons creates electric current. Solar cells have positive and negative contacts, like the terminals in chemical cells. If the contacts are connected with wire, current flows from the negative to positive contact. The Figure below and following URL show how a solar cell works. http://www. suntreksolar. com/solarElectricity/howCellsWork. asp. Choices: - active energy - radical energy - stellar energy - electrical energy A:
electrical energy
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Q: The amniotic sac is attached to what? Read this paragraph and choose the correct option from the provided answers: Attached to the placenta is the amniotic sac , an enclosed membrane that surrounds and protects the fetus (see Figure above ). It contains amniotic fluid, which consists of water and dissolved substances. The fluid allows the fetus to move freely until it grows to fill most of the available space. The fluid also cushions the fetus and helps protect it from injury. Choices: - Umbilical Cord - Stomach - uterus - placenta A:
| placenta
------ | 5 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Q: What is a dip slip fault where the dip of the fault plane is vertical? Read this paragraph and choose the correct option from the provided answers: A strike-slip fault is a dip-slip fault where the dip of the fault plane is vertical. Strike-slip faults result from shear stresses. If you stand with one foot on each side of a strike-slip fault, one side will be moving toward you while the other side moves away from you. If your right foot moves toward you, the fault is known as a right-lateral strike-slip fault. If your left foot moves toward you, the fault is a left-lateral strike-slip fault ( Figure below ). Choices: - strike - theory - reverse slip - incline slip - strike-slip A:
strike-slip
Q: While enzymatic hydrolysis proceeds, peristalsis moves the mixture of chyme and digestive juices along what? Read this paragraph and choose the correct option from the provided answers: Choices: - esophagus - stomach - large intestine - small intestine A:
small intestine
Q: The iconic gray mantle of the human brain, which appears to make up most of the mass of the brain, is called? Read this paragraph and choose the correct option from the provided answers: The Cerebrum The iconic gray mantle of the human brain, which appears to make up most of the mass of the brain, is the cerebrum (Figure 13.6). The wrinkled portion is the cerebral cortex, and the rest of the structure is beneath that outer covering. There is a large separation between the two sides of the cerebrum called the longitudinal fissure. It separates the cerebrum into two distinct halves, a right and left cerebral hemisphere. Deep within the cerebrum, the white matter of the corpus callosum provides the major pathway for communication between the two hemispheres of the cerebral cortex. Choices: - brain stem - lobes - thrombus - cerebrum A:
| cerebrum | 1 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Ques: Q: In what type of body of water is most of the earth's water located? Read this paragraph and choose the correct option from the provided answers: Most of Earth’s water is salt water in the oceans. As seen below, only 3 percent of Earth’s water is fresh ( Figure below ). Freshwater is water that contains little or no dissolved salt. Most freshwater is frozen in ice caps and glaciers. Glaciers cover the peaks of some tall mountains. For example, the Cascades Mountains in North America and the Alps Mountains in Europe are capped with ice. Ice caps cover vast areas of Antarctica and Greenland. Chunks of ice frequently break off ice caps. They form icebergs that float in the oceans. Choices: - streams - rivers - seas - oceans A:
Ans: oceans
Ques: Q: What forms when there is a difference in temperature between the land and the air? Read this paragraph and choose the correct option from the provided answers: Fog forms when there is a difference in temperature between the land and the air. Choices: - smoke - tsunamis - sandstorms - fog A:
Ans: fog
Ques: Q: What is a sugar that is found in fruits? Read this paragraph and choose the correct option from the provided answers: In the Figure below , you can see structural formulas for glucose and two other sugars, named fructose and sucrose. Fructose is a sugar that is found in fruits. It is an isomer of glucose. Isomers are compounds that have the same atoms but different arrangements of atoms. Do you see how the atoms are arranged differently in fructose than in glucose? You’re probably most familiar with the sugar sucrose, because sucrose is table sugar. It’s the sugar that you spoon onto your cereal or into your iced tea. Choices: - ethanol - glucose - sucrose - fructose A:
Ans: fructose
Ques: Q: The sum of the kinetic and potential energies of a system’s atoms and molecules is called what? Read this paragraph and choose the correct option from the provided answers: Internal energy—the sum of the kinetic and potential energies of a system’s atoms and molecules. Can be divided into many subcategories, such as thermal and chemical energy. Depends only on the state of a system (such as its P , V , and T ), not on how the energy entered the system. Change in internal energy is path independent. Choices: - mechanical energy - used energy - stored energy - internal energy A:
Ans: | internal energy | 7 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Q: What takes place in the organelle known as the chloroplast, which distinguishes animal from plant cells? Read this paragraph and choose the correct option from the provided answers: Photosynthesis takes place in the organelle of the plant cell known as the chloroplasts. Chloroplasts are one of the main differences between plant and animal cells. Animal cells do not have chloroplasts, so they cannot photosynthesize. Photosynthesis occurs in two stages. During the first stage, the energy from sunlight is absorbed by the chloroplast. Water is used, and oxygen is produced during this part of the process. During the second stage, carbon dioxide is used, and glucose is produced. Choices: - digestion - reproduction - perspiration - photosynthesis A:
photosynthesis
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Q: What is the minimum number of loops a circuit can have? Read this paragraph and choose the correct option from the provided answers: An electric circuit consists of at least one closed loop through which electric current can flow. Every circuit has a voltage source such as a battery and a conductor such as metal wire. A circuit may have other parts as well, such as lights and switches. In addition, a circuit may consist of one loop or two loops. Choices: - 3 - .1 - 2 - 1 A:
1
------
Q: In what century was the microscope invented? Read this paragraph and choose the correct option from the provided answers: 7.2 History of cell knowledge The optical microscope was first invented in 17th century. Shortly thereafter scientists began to examine living and dead biological tissues in order to better understand the science of life. Some of the most relevant discovery milestones of the time period include: • The invention of the microscope11 , which allowed scientists for the first time to see biological cells • Robert Hooke12 in 1665 looked at cork under a microscope and described what he called cork "cells" • Anton van Leeuwenhoek13 called the single-celled organisms that he saw under the microscope "animalcules" • Matthias Jakob Schleiden14 , a botanist, in 1838 determined that all plants consist of cells • Theodor Schwann15 , a zoologist, in 1839 determined that all animals consist of cells • Rudolf Virchow16 proposed the theory that all cells arise from previously existing cells In 1838, the botanist Matthias Jakob Schleiden and the physiologist Theodor Schwann discovered that both plant cells and animal cells had nuclei. Based on their observations, the two scientists conceived of the hypothesis that all living things were composed of cells. In 1839, Schwann published 'Microscopic Investigations on the Accordance in the Structure and Growth of Plants and Animals', which contained the first statement of their joint cell theory. Choices: - 20th - 16th - 15th - 17th A:
17th
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Q: What type of eukaryotes are protists normally? Read this paragraph and choose the correct option from the provided answers: Most protists are so small that they can be seen only with a microscope. Protists are mostly unicellular (one-celled) eukaryotes. A few protists are multicellular (many-celled) and surprisingly large. For example, kelp is a multicellular protist that can grow to be over 100-meters long ( Figure below ). Multicellular protists, however, do not show cellular specialization or differentiation into tissues. That means their cells all look the same and, for the most part, function the same. On the other hand, your cells often are much different from each other and have special jobs. Choices: - multicellular - photosynthetic - immature - unicellular A:
| unicellular
------ | 5 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Q: What are the two types of vascular tissue? Read this paragraph and choose the correct option from the provided answers: Choices: - ectoderm and phloem - phloem and phlegm - cytoplasm and ectoplasm - xylem and phloem A:
xylem and phloem
Q: What do you call the movement of molecules across a membrane without the input of energy? Read this paragraph and choose the correct option from the provided answers: Recall that the cell membrane is semipermeable. It does not allow everything to pass through. Some molecules can pass easily through your cell membranes, while others have more difficulty. Sometimes molecules need the help of special transport proteins to move across the cell membrane. Some molecules even need an input of energy to help get them across the cell membrane. The movement of molecules across a membrane without the input of energy is known as passive transport . When energy (ATP) is needed, the movement is known as active transport . Active transport moves molecules against their concentration gradient, from an area of low concentration to an area of high concentration. Choices: - obvious transport - reactive transport - active transport - passive transport A:
passive transport
Q: Chromosomes further condensed in which stage? Read this paragraph and choose the correct option from the provided answers: During the diakinesis stage, chromosomes further condense. The chiasmata remain intact during this stage. The remainder of this stage is similar to prometaphase of mitosis: the nucleoli disappear, the nuclear membrane disintegrates, and the meiotic spindle begins to form. Choices: - tracheophyte stage - zooflagellate stage - zygum stage - diakinesis stage A:
| diakinesis stage | 1 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Ques: Q: What is the only continent without amphibians? Read this paragraph and choose the correct option from the provided answers: Amphibians can be found in freshwater and moist terrestrial habitats throughout the world. The only continent without amphibians is Antarctica. Amphibians are especially numerous in temperate lakes and ponds and in tropical rainforests. Choices: - Australia - Europe - Africa - antarctica A:
Ans: antarctica
Ques: Q: What is the temperature at which condensation of water vapor occurs called? Read this paragraph and choose the correct option from the provided answers: The temperature at which condensation of water vapor occurs is called the dew point. The dew point varies depending on air temperature and moisture content. Choices: - the tipping point - the boiling point - the cooling point - the dew point A:
Ans: the dew point
Ques: Q: What process joins two haploid gametes into a diploid zygote? Read this paragraph and choose the correct option from the provided answers: Fertilization joins two haploid gametes into a diploid zygote. Choices: - embryo - fusion - migration - fertilization A:
Ans: fertilization
Ques: Q: Because dizygotic twins develop from two eggs fertilized by two sperm, they are no more identical than siblings born at what? Read this paragraph and choose the correct option from the provided answers: birth of dizygotic (or fraternal) twins. Because dizygotic twins develop from two eggs fertilized by two sperm, they are no more identical than siblings born at different times. Much less commonly, a zygote can divide into two separate offspring during early development. This results in the birth of monozygotic (or identical) twins. Although the zygote can split as early as the two-cell stage, splitting occurs most commonly during the early blastocyst stage, with roughly 70–100 cells present. These two scenarios are distinct from each other, in that the twin embryos that separated at the two-cell stage will have individual placentas, whereas twin embryos that form from separation at the blastocyst stage will share a placenta and a chorionic cavity. Choices: - other times of day - different places - other eras - different times A:
Ans: | different times | 7 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Q: Q: What is made up of nerve cells that sense stimuli and transmit signals? Read this paragraph and choose the correct option from the provided answers: Nervous tissue is made up of nerve cells that sense stimuli and transmit signals. Nervous tissue is found in nerves, the spinal cord, and the brain. Choices: - muscle tissues - blood tissue - dependent tissue - nervous tissue A:
A: nervous tissue
Q: Q: What process allows plants to convert light energy into sugars and energy for food? Read this paragraph and choose the correct option from the provided answers: Chemical reactions are occurring all around you. Plants use sunlight to drive their photosynthetic process and produce energy. Cars and other vehicles burn gasoline in order to power their engines. Batteries use electrochemical reactions to produce energy and power many everyday devices. Many chemical reactions are going on inside you as well, especially during the digestion of food. Choices: - respiration - glycolysis - digestion - photosynthesis A:
A: photosynthesis
Q: Q: What amazing machines smash particles that are smaller than atoms into each other head-on? Read this paragraph and choose the correct option from the provided answers: Scientists have built machines called particle accelerators. These amazing tools smash particles that are smaller than atoms into each other head-on. This creates new particles. Scientists use particle accelerators to learn about nuclear fusion in stars. They can also learn about how atoms came together in the early universe. Two well-known accelerators are SLAC, in California, and CERN, in Switzerland. Choices: - nitrogen accelerators - observant accelerators - absorption accelerators - particle accelerators A:
A: particle accelerators
Q: Q: What proteins synthesized in cells act as catalysts? Read this paragraph and choose the correct option from the provided answers: Chemical reactions constantly occur inside the cells of living things. However, under the conditions inside cells, most biochemical reactions would occur too slowly to maintain life. That’s where enzymes come in. Enzymes are catalysts in living things. Like other catalysts, they speed up chemical reactions. Enzymes are proteins that are synthesized in the cells that need them, based on instructions encoded in the cells’ DNA. Choices: - hormones - virophages - byproducts - enzymes A:
| A: enzymes | 2 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Q: The processes of homeostasis and temperature control are centered in the hypothalamus of the advanced animal brain, thus thermoregulation depends on what organ system? Read this paragraph and choose the correct option from the provided answers: Neural Control of Thermoregulation The nervous system is important to thermoregulation, as illustrated in Figure 33.22. The processes of homeostasis and temperature control are centered in the hypothalamus of the advanced animal brain. Choices: - circulatory system - digestive system - cardiovascular system - nervous system A:
nervous system
Q: How can natural resources be classified from a human point of view? Read this paragraph and choose the correct option from the provided answers: From a human point of view, natural resources can be classified as either renewable or nonrenewable. Choices: - renewable or reversible - recyclable or reusable - present or nonrenewable - renewable or nonrenewable A:
renewable or nonrenewable
Q: What gland is located at the base of the brain and secretes the hormone melatonin? Read this paragraph and choose the correct option from the provided answers: The pineal gland is a tiny gland located at the base of the brain. It secretes the hormone melatonin. This hormone controls sleep-wake cycles and several other processes. Choices: - thymus - pituitary - thyroid - pineal A:
pineal
Q: Like the energy content in food, the energy expenditures of exercise are also reported in what units? Read this paragraph and choose the correct option from the provided answers: To Your Health: Energy Expenditures Most health professionals agree that exercise is a valuable component of a healthy lifestyle. Exercise not only strengthens the body and develops muscle tone but also expends energy. After obtaining energy from the foods we eat, we need to expend that energy somehow, or our bodies will store it in unhealthy ways. Like the energy content in food, the energy expenditures of exercise are also reported in kilocalories, usually kilocalories per hour of exercise. These expenditures vary widely, from about 440 kcal/h for walking at a speed of 4 mph to 1,870 kcal/h for mountain biking at 20 mph. Table 7.2 "Energy Expenditure of a 180-Pound Person during Selected Exercises" lists the energy expenditure for a variety of exercises. Saylor URL: http://www. saylor. org/books. Choices: - ironies - gigabytes - grams - kilocalories A:
| kilocalories | 0 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Question: Q: Quarks in the middle energy family are found in cosmic rays and are produced in what? Read this paragraph and choose the correct option from the provided answers: Everyday objects are made up of quarks from the lowest energy family, namely up and down quarks. Quarks in the middle energy family are found in cosmic rays and are produced in particle accelerators. Particles in the high energy family are believed to have existed briefly during the earliest moments of the Big Bang and are created only in high energy collisions. Choices: - particle processors - cosmic accelerators - particle splicers - particle accelerators A:
Answer: particle accelerators
Question: Q: Both sexes of sockeye salmon turn red with green heads just prior to what? Read this paragraph and choose the correct option from the provided answers: Wild male and female Sockeye salmon before spawning. Sockeye salmon are blue tinged with silver in color while living in the ocean. Just prior to spawning, both sexes turn red with green heads. Sockeye spawn mostly in streams having lakes in their watershed. The young fish spend up to three years in the freshwater lake before migrating to the ocean. Migratory fish spend from one to four years in salt water, and thus are four to six years old when they return to spawn. Navigation to the home river is thought to be done using the characteristic smell of the stream, and possibly the sun. Choices: - dying - feeding - migrating - spawning A:
Answer: spawning
Question: Q: The “knee-jerk" motion that people involuntarily perform after being struck in the knee in a certain way is an example of what kind of behavior? Read this paragraph and choose the correct option from the provided answers: Innate Behaviors: Movement and Migration Innate or instinctual behaviors rely on response to stimuli. The simplest example of this is a reflex action, an involuntary and rapid response to stimulus. To test the “knee-jerk” reflex, a doctor taps the patellar tendon below the kneecap with a rubber hammer. The stimulation of the nerves there leads to the reflex of extending the leg at the knee. This is similar to the reaction of someone who touches a hot stove and instinctually pulls his or her hand away. Even humans, with our great capacity to learn, still exhibit a variety of innate behaviors. Choices: - reaction - spasm - sensor - reflex A:
Answer: | reflex | 3 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
*Question*
Q: A species is a subdivision of a genus in what classification system? Read this paragraph and choose the correct option from the provided answers: Linnaean Classification System: Classification of the Human Species. This chart shows the taxa of the Linnaean classification system. Each taxon is a subdivision of the taxon below it in the chart. For example, a species is a subdivision of a genus. The classification of humans is given in the chart as an example. Choices: - calcareous system - mammalian - crocodilian system - linnaean system A:
**Answer**
linnaean system
*Question*
Q: What do you call the electrons in the outer energy level of an atom that are involved in chemical bonds? Read this paragraph and choose the correct option from the provided answers: Carbon is a nonmetal in group 14 of the periodic table. Like other group 14 elements, carbon has four valence electrons. Valence electrons are the electrons in the outer energy level of an atom that are involved in chemical bonds. The valence electrons of carbon are shown in the electron dot diagram in the Figure below . Choices: - force electrons - helium electrons - transitions electrons - valence electrons A:
**Answer**
valence electrons
*Question*
Q: Birds that move pollen from flower to flower are called what? Read this paragraph and choose the correct option from the provided answers: Nectar-feeding birds are important pollinators , meaning they move the pollen from flower to flower to help fertilize the sex cells and create new plants. Hummingbirds, sunbirds, and the honey-eaters are common pollinators. Choices: - carnivores - spores - frogs - pollinators A:
**Answer**
pollinators
*Question*
Q: Which fungi eaten by people all over the world? Read this paragraph and choose the correct option from the provided answers: Mushrooms are fungi that are eaten by people all over the globe. Choices: - fruits - legumes - algae - mushrooms A:
**Answer**
| mushrooms | 4 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Q: Q: Fermat's principle states that what will always take the path that takes the least amount of time? Read this paragraph and choose the correct option from the provided answers: Light is a wave of changing electric and magnetic fields. Light waves are caused by disturbances in an electromagnetic field, like the acceleration of charged particles (such as electrons). Light has a dual nature; at times, it acts like waves, while at other times it acts like particles, called photons . Light travels through space at the maximum speed allowed by the laws of physics, called the speed of light. Light has no mass, but it carries energy and momentum. Fermat's principle states that light will always take the path that takes the least amount of time (not distance). Choices: - sound - wind - electricity - light A:
A: light
Q: Q: What are temporary feet that protists have called? Read this paragraph and choose the correct option from the provided answers: Other protists have what are called transient pseudopodia , which are like temporary feet. The cell surface extends out to form feet-like structures that propel the cell forward. An example of a protist with pseudopodia is the amoeba. Choices: - pedicules - spontaneous pseudopodia - temporary flagella - transient pseudopodia A:
A: transient pseudopodia
Q: Q: Galaxies can be spiral, elliptical, or which other type? Read this paragraph and choose the correct option from the provided answers: Galaxies can be spiral, elliptical, or irregular. Choices: - oblong - simple - vertical - irregular A:
A: irregular
Q: Q: Layers of placental transfer cells help transport nutrients to the embryos as they develop into what? Read this paragraph and choose the correct option from the provided answers: Choices: - keratinocytes - fibroblasts - kinesins - sporophytes A:
| A: sporophytes | 2 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Q: Superconductors expel a magnetic field from their interior. what is this phenomenon known as? Read this paragraph and choose the correct option from the provided answers: Summary Superconductors are solids that at low temperatures exhibit zero resistance to the flow of electrical current, a phenomenon known as superconductivity. The temperature at which the electrical resistance of a substance drops to zero is itssuperconducting transition temperature (Tc). Superconductors also expel a magnetic field from their interior, a phenomenon known as the Meissner effect. Superconductivity can be explained by the BCS theory, which says that electrons are able to travel through a solid with no resistance because they couple to form pairs of electrons (Cooper pairs). Hightemperature superconductors haveTc values greater than 30 K. Choices: - weissenberg effect - eibner effect - lauer effect - meissner effect A:
meissner effect
Q: The elbow is an example of a what type of joint? Read this paragraph and choose the correct option from the provided answers: Hinge Joints In hinge joints, the slightly rounded end of one bone fits into the slightly hollow end of the other bone. In this way, one bone moves while the other remains stationary, like the hinge of a door. The elbow is an example of a hinge joint. The knee is sometimes classified as a modified hinge joint (Figure 38.28). Choices: - pipe joint - toe joint - frame joint - hinge joint A:
hinge joint
Q: What is made up of a watery substance called cytosol and contains other cell structures such as ribosomes? Read this paragraph and choose the correct option from the provided answers: Cytoplasm refers to all of the cellular material inside the plasma membrane. Cytoplasm is made up of a watery substance called cytosol and contains other cell structures such as ribosomes. Choices: - rna - plasma - cytoskeleton - cytoplasm A:
cytoplasm
Q: What is the name for tiny animals that feed on phytoplankton? Read this paragraph and choose the correct option from the provided answers: Plankton are tiny aquatic organisms that cannot move on their own. They live in the photic zone. They include phytoplankton and zooplankton. Phytoplankton are bacteria and algae that use sunlight to make food. Zooplankton are tiny animals that feed on phytoplankton. Choices: - larvae - krill - jellyfish - zooplankton A:
| zooplankton | 0 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Ques: Q: Kidney stones can form anywhere in what system? Read this paragraph and choose the correct option from the provided answers: A kidney stone. The stones can form anywhere in the urinary system. Choices: - digestive - respiratory - intestinal - urinary A:
Ans: urinary
Ques: Q: How do most plants create food? Read this paragraph and choose the correct option from the provided answers: Plants are multicellular eukaryotes. They have organelles called chloroplasts and cell walls made of cellulose. Plants also have specialized reproductive organs. Almost all plants make food by photosynthesis. Life as we know it would not be possible without plants. Choices: - electrolysis - atherosclerosis - glycolysis - photosynthesis A:
Ans: photosynthesis
Ques: Q: What explains the spherical shape of ceres, once thought to be the largest asteroid? Read this paragraph and choose the correct option from the provided answers: Ceres ( Figure below ) is a rocky body that orbits the Sun. It could be an asteroid or a planet. Before 2006, Ceres was thought to be the largest asteroid. Is it an asteroid? Ceres is in the asteroid belt. But it is by far the largest object in the belt. Ceres has such high gravity that it is spherical. Choices: - orbital plane - space debris - low gravity - high gravity A:
Ans: high gravity
Ques: Q: When both momentum and kinetic energy are conserved in a closed system, the collision is called what? Read this paragraph and choose the correct option from the provided answers: For all collisions in a closed system, momentum is conserved. In some collisions in a closed system, kinetic energy is conserved. When both momentum and kinetic energy are conserved, the collision is called an elastic collision. Most collisions are inelastic because some amount of kinetic energy is converted to potential energy, usually by raising one of the objects higher (increasing gravitation PE) or by flexing the object. Any denting or other changing of shape by one of the objects will also be accompanied by a loss of kinetic energy. The only commonly seen elastic collisions are those between billiard balls or ball bearings, because these balls do not compress. And, of course, collisions between molecules are elastic if no damage is done to the molecules. Choices: - a static collision - a spontaneous collision - an accidental collision - an elastic collision A:
Ans: | an elastic collision | 7 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
*Question*
Q: What transmits nerve impulses to other cells? Read this paragraph and choose the correct option from the provided answers: Neurons transmit nerve impulses to other cells. Choices: - fats - muscles - ions - neurons A:
**Answer**
neurons
*Question*
Q: Glucose is an example of what simple carboyhydrates with relatively few carbon atoms? Read this paragraph and choose the correct option from the provided answers: Sugars are simple carbohydrates. Molecules of sugars have relatively few carbon atoms. Glucose (C 6 H 12 O 6 ) is one of the smallest sugar molecules. Plants and some other organisms make glucose in the process of photosynthesis. Living things that cannot make glucose obtain it by consuming plants or these other organisms. Choices: - solvents - mixtures - acids - sugars A:
**Answer**
sugars
*Question*
Q: What is required for a decay chain to end? Read this paragraph and choose the correct option from the provided answers: We have talked about the activity and decay of individual isotopes. In the real world, there is a decay chain that takes place until a stable end-product is produced. For U-238, the chain is a long one, with a mix of isotopes having very different half-lives. The end of the chain resides in lead, a stable element that does not decay further. Choices: - stable half-life - unstable end-product - radioactive cascade - stable end-product A:
**Answer**
stable end-product
*Question*
Q: When we move down a group of elements on the periodic table, what happens to their electronegativity? Read this paragraph and choose the correct option from the provided answers: The nonmetals are elements located in the upper right portion of the periodic table. Their properties and behavior are quite different from those of metals on the left side. Under normal conditions, more than half of the nonmetals are gases, one is a liquid, and the rest include some of the softest and hardest of solids. The nonmetals exhibit a rich variety of chemical behaviors. They include the most reactive and least reactive of elements, and they form many different ionic and covalent compounds. This section presents an overview of the properties and chemical behaviors of the nonmetals, as well as the chemistry of specific elements. Many of these nonmetals are important in biological systems. In many cases, trends in electronegativity enable us to predict the type of bonding and the physical states in compounds involving the nonmetals. We know that electronegativity decreases as we move down a given group and increases as we move from left to right across a period. The nonmetals have higher electronegativities than do metals, and compounds formed between metals and nonmetals are generally ionic in nature because of the large differences in electronegativity between them. The metals form cations, the nonmetals form anions, and the resulting compounds are solids under normal conditions. On the other hand, compounds formed between two or more nonmetals have small differences in electronegativity between the atoms, and covalent bonding—sharing of electrons—results. These substances tend to be molecular in nature and are gases, liquids, or volatile solids at room temperature and pressure. In normal chemical processes, nonmetals do not form monatomic positive ions (cations) because their ionization energies are too high. All monatomic nonmetal ions are anions; examples include the chloride ion, Cl−, the nitride ion, N3−, and the selenide ion, Se2−. The common oxidation states that the nonmetals exhibit in their ionic and covalent compounds are shown in Figure 18.19. Remember that an element exhibits a positive... Choices: - it increases - it stays the same - it doubles - it decreases A:
**Answer**
| it decreases | 4 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
(Q).
Q: The strength of what depends on the concentration of hydrogen ions it produces when dissolved in water? Read this paragraph and choose the correct option from the provided answers: The strength of an acid depends on the concentration of hydrogen ions it produces when dissolved in water. A stronger acid produces a greater concentration of ions than a weaker acid. For example, when hydrogen chloride is added to water, all of it breaks down into H + and Cl - ions. Therefore, it is a strong acid. On the other hand, only about 1 percent of acetic acid breaks down into ions, so it is a weak acid. Choices: - the solution - electricity - the base - acid A:
(A).
acid
(Q).
Q: What two values does a blood pressure reading include? Read this paragraph and choose the correct option from the provided answers: Blood pressures are expressed in millimeters of mercury. What would be the blood pressure in atmospheres if a patient’s systolic blood pressure is 120 mmHg and the diastolic blood pressure is 82 mmHg? (In medicine, such a blood pressure would be reported as “120/82,” spoken as “one hundred twenty over eighty-two. Choices: - biotic and abiotic - high and low - cholesterol and systolic - systolic and diastolic A:
(A).
systolic and diastolic
(Q).
Q: What is the term for a watertight seal between two adjacent animal cells? Read this paragraph and choose the correct option from the provided answers: A tight junction is a watertight seal between two adjacent animal cells (Figure 3.17b). Proteins hold the cells tightly against each other. This tight adhesion prevents materials from leaking between the cells. Tight junctions are typically found in the epithelial tissue that lines internal organs and cavities, and composes most of the skin. For example, the tight junctions of the epithelial cells lining the urinary bladder prevent urine from leaking into the extracellular space. Also found only in animal cells are desmosomes, which act like spot welds between adjacent epithelial cells (Figure 3.17c). They keep cells together in a sheet-like formation in organs and tissues that stretch, like the skin, heart, and muscles. Gap junctions in animal cells are like plasmodesmata in plant cells in that they are channels between adjacent cells that allow for the transport of ions, nutrients, and other substances that enable cells to communicate (Figure 3.17d). Structurally, however, gap junctions and plasmodesmata differ. Choices: - cell membrane - cell wall - placental barrier - tight junction A:
(A).
| tight junction | 8 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
Ques:Q: Spontaneous reactions release what type of energy, meaning it is available to do work? Read this paragraph and choose the correct option from the provided answers: Many chemical reactions and physical processes release energy that can be used to do other things. When the fuel in a car is burned, some of the released energy is used to power the vehicle. Free energy is energy that is available to do work. Spontaneous reactions release free energy as they proceed. Recall that the determining factors for spontaneity of a reaction are the enthalpy and entropy changes that occur for the system. The free energy change of a reaction is a mathematical combination of the enthalpy change and the entropy change. Choices: - potential energy - radioactive energy - kinetic energy - free energy A:
Ans:free energy
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Ques:Q: Where does most of the mass for an atom reside? Read this paragraph and choose the correct option from the provided answers: Electrons have virtually no mass, but protons and neutrons have a lot of mass for their size. As a result, the nucleus has virtually all the mass of an atom. Given its great mass and tiny size, the nucleus is very dense. If an object the size of a penny had the same density as the nucleus of an atom, its mass would be greater than 30 million tons! You can learn more about the size and mass of the nucleus at this URL:. Choices: - electrons - neutrons - protons - nucleus A:
Ans:nucleus
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Ques:Q: Vaccinations are designed to boost immunity to a virus to prevent this? Read this paragraph and choose the correct option from the provided answers: Figure 21.14 Vaccinations are designed to boost immunity to a virus to prevent infection. (credit: USACE Europe District). Choices: - mutation - reproduction - pathogen - infection A:
Ans:infection
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Ques:Q: What occur because solid lithosphere travels on a round planet? Read this paragraph and choose the correct option from the provided answers: Intraplate earthquakes occur because solid lithosphere travels on a round planet. Choices: - aeration earthquakes - volcanos - ejecta earthquakes - intraplate earthquakes A:
Ans: | intraplate earthquakes
----- | 9 | P3 | sciq_Multiple_Choice_Question_First | fs_noopt |
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