Split (1)

train · 11.7k rows

distractor1 stringlengths 1 57	distractor2 stringlengths 1 62	distractor3 stringlengths 1 63	correct_answer stringlengths 1 67	question stringlengths 14 399	support stringlengths 0 3.56k
oils	vitamins	water molecules	salts	What substances, which are distinct from acids and bases, form when ions form ionic bonds?	Salts Recall that salts are formed when ions form ionic bonds. In these reactions, one atom gives up one or more electrons, and thus becomes positively charged, whereas the other accepts one or more electrons and becomes negatively charged. You can now define a salt as a substance that, when dissolved in water, dissoci...
lipids	protons	hormones	proteins	What is the name for biochemical compounds that consist of one or more chains of small molecules called amino acids?	Proteins are biochemical compounds that consist of one or more chains of small molecules called amino acids. Amino acids are the monomers of proteins. There are only about 20 different amino acids. The sequence of amino acids in chains and the number of chains in a protein determine the protein’s shape. Shapes may be v...
isotopes	acids	enzymes	bases	What are the ionic compounds that produce negative hydroxide ions when dissolved in water?	Bases are ionic compounds that produce negative hydroxide ions (OH - ) when dissolved in water. An ionic compound contains positive metal ions and negative nonmetal ions held together by ionic bonds. (Ions are atoms that have become charged particles because they have either lost or gained electrons. ) An example of a ...
74	9	36	18	The atomic number of tungsten is 74. therefore, in a neutral atom of tungsten, there are 74 electrons. the atomic number of argon is 18. therefore, in a neutral atom of argon, there are how many electrons?	The atomic number of tungsten is 74. Therefore, in a neutral atom of tungsten, there are 74 electrons. The atomic number of argon is 18. Therefore, in a neutral atom of argon, there are 18 electrons.
Golgi apparatus	catalyst	an aqueous cell	an electrolytic cell	What is the apparatus used for carrying out an electrolysis reaction?	An electrolytic cell is the apparatus used for carrying out an electrolysis reaction. In an electrolytic cell, electric current is applied to provide a source of electrons for driving the reaction in a nonspontaneous direction. In a voltaic cell, the reaction goes in a direction that releases electrons spontaneously. I...
magnified or scattered	reflected or refracted	absorption and refraction	refracted or scattered	What two ways may light be transmitted?	Transmitted light may be refracted or scattered. When does each process occur?.
bi-annually	seasonally	monthly	annual	Triggered by changes in the environment, migration and hibernation occur as cycles on what temporal basis?	Examples of behaviors with annual cycles include migration and hibernation. Both are innate behaviors. They are triggered by changes in the environment, such as the days growing shorter in the fall.
golgi apparatus	ovarian tubes	vas deferens	fallopian tubes	What pair of tubes that extends toward the ovaries features a fringelike structure that sweeps eggs inside?	Extending from the upper corners of the uterus are the two fallopian tubes. Each tube reaches (but is not attached to) one of the ovaries. The ovary end of the tube has a fringelike structure that moves in waves. The motion sweeps eggs from the ovary into the tube.
vision	tasting	feeling	hearing	In most animals, what sense is related to balance or equilibrium?
fruits	leaves	spines	stems	Terminal pods are located at the end of what?	Mendel investigated seven different characteristics in pea plants. In this chart, cotyledons refer to the tiny leaves inside seeds. Axial pods are located along the stems. Terminal pods are located at the ends of the stems.
xerophyte	spirogyra	monospore	zygospore	What forms when the spores from two parents fuse during sexual reproduction?	Sexual reproduction occurs when spores from two parents fuse and form a zygospore.
Centaurus A	Andromeda	Bode's Galaxy	milky way	What is the name of the galaxy we live in?	Like other spiral galaxies, our galaxy has a disk, a central bulge, and spiral arms. The disk is about 100,000 light-years across and 3,000 light-years thick. Most of the Galaxy’s gas, dust, young stars, and open clusters are in the disk.
trees	grasses	weeds	ferns	What are the most common seedless vascular plants?	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....
worker	male	drone	female	In a monogamous pairing, a male individual is generally paired with what other type of individual in a sexual relationship?	Visit this website (http://openstaxcollege. org/l/sex_selection) for informative videos on sexual selection. In monogamous systems, one male and one female are paired for at least one breeding season. In some animals, such as the gray wolf, these associations can last much longer, even a lifetime. Several explanations ...
partial atomic masses	subatomic masses	optical atomic masses	relative atomic masses	What is a mass spectrometer used to measure?	Although the masses of the electron, the proton, and the neutron are known to a high degree of precision (Table 1.3 "Properties of Subatomic Particles*"), the mass of any given atom is not simply the sum of the masses of its electrons, protons, and neutrons. For example, the ratio of the masses of 1H (hydrogen) and 2H ...
subject reproduction	cellular reproduction	sexual destruction	sexual reproduction	What combines sets of genes from two different parents leading to genetically diverse offspring?
greenhouse gases	rainforests	rain	warmer water	Global warming will raise ocean levels due to melt water from glaciers and the greater volume of what?	Range shifts are already being observed: for example, some European bird species ranges have moved 91 km northward. The same study suggested that the optimal shift based on warming trends was double that distance, suggesting that the populations are not moving quickly enough. Range shifts have also been observed in pla...
constellations	galaxies	closed clusters	open clusters	What are groups of young stars loosely held together by gravity called?	Open clusters are groups of young stars loosely held together by gravity.
spore	pathogen	seed	pollen	What does a pollinator pick up from its body and carry directly to another plant of the same species?	Wind-blown pollen might land anywhere and be wasted. Another adaptation solved this problem. Plants evolved traits that attract specific animal pollinators. Like the bee in Figure below , a pollinator picks up pollen on its body and carries it directly to another plant of the same species. This greatly increases the ch...
liquid	turpentine	ammonia	water	What is formed when an oxygen atom picks up a pair of hydrogen ions from a solution?
depletion of electricity	diffusion of electricity	absorption of electricity	generation of electricity	What does the driving of turbines by the heating of water to steam accomplish?	Nuclear reactors heat water to steam to drive a turbine for generation of electricity.
a battery	a windmill	a diesel engine	an electric generator	What is a device that changes kinetic energy to electrical energy through electromagnetic induction?	An electric generator is a device that changes kinetic energy to electrical energy through electromagnetic induction. A simple diagram of an electric generator is shown in Figure below . In a generator, some form of energy is applied to turn a shaft. This causes a coil of wire to rotate between opposite poles of a magn...
85	60	87	90	How many naturally occurring elements are known on earth?	An element, as defined in Chapter 1 "Chemistry, Matter, and Measurement", is a substance that cannot be broken down into simpler chemical substances. There are about 90 naturally occurring elements known on Earth. Using technology, scientists have been able to create nearly 30 additional elements that do not occur in n...
dielectric and exocytosis	epithelium and exocytosis	eptocytosis and exocytosis	endocytosis and exocytosis	What are the two types of vesicle transport called?
endangered	inhabit	remnant	extinct	What do you call a species that has died out in the past?	Life is complex, and there are millions of species alive today. Many millions more lived in the past and then went extinct. Organisms include microscopic, single-celled organisms. They also include complex, multicellular animals such as you. Clearly, life science is a huge science. That’s why a life scientist usually s...
outside the female plant after fertilization	inside the stem after fertilization	inside the male plant after fertilization	inside the female plant after fertilization	Where does the embryo develop in a plant?	In plants, the embryo develops inside of the female plant after fertilization. Algae do not keep the embryo inside of themselves but release it into water. This was the first feature to evolve that separated plants from green algae. This is also the only adaptation shared by all plants.
parallax	distortion	precision	calibration	What is the method of setting or correcting a measuring device by matching it to known measurement standards called?	When using measuring devices, we often use a technique called calibration to increase the accuracy of our measurements. Calibration is a method of setting or correcting a measuring device by matching it to known measurement standards. To better understand calibration, we will look at the example of calibrating a thermo...
greater pressure	greater density	higher temperature	lower density	What property of warm air causes it to rise above cold air?	The warm-air vent is placed near the floor of the room. Warm air is less dense than cold air so it rises. If the warm-air vent were placed near the ceiling instead, how would this affect the transfer of thermal energy throughout the room?.
microbiology	anthropology	embryology	ethology	Which branch of biology studies animal behavior?	The branch of biology that studies animal behavior is called ethology. Ethologists usually study how animals behave in their natural environment. They try to determine the cause of behaviors, how behaviors develop, and how and why behaviors evolve.
joule	watt	torque	horsepower	What unit of measure is equal to the amount of work a horse can do in 1 minute?	Power may be measured in a unit called the horsepower. One horsepower is the amount of work a horse can do in 1 minute, which equals 745 watts of power.
annelids	prokaryotes	sponges	cnidarians	What organism is characterized by an incomplete digestive system and a single, tentacled opening?	Cnidarians have an incomplete digestive system with a single opening. The opening is surrounded by tentacles, which are covered with nematocyst cells and used to capture prey. Digestion takes place in the digestive cavity. Nutrients are absorbed and gases are exchanged through the cells lining this cavity. Fluid in the...
frequency	speed	mass	voltage	What term is not the same as energy, but means the energy per unit charge?	The second equation is equivalent to the first. Voltage is not the same as energy. Voltage is the energy per unit charge. Thus a motorcycle battery and a car battery can both have the same voltage (more precisely, the same potential difference between battery terminals), yet one stores much more energy than the other s...
petals	spores	roots	leaves	What specific part of the african violet is used to propagate other plants?
hydrogen fibers	evaporative fibers	fragile fibers	oxidative fibers	What are fibers that depend on aerobic respiration called?
neither	low frequency waves	the same	high frequency waves	Which form of electromagnetic waves have more energy: low frequency wave or high frequency waves?	The energy of electromagnetic waves depends on their frequency. Low-frequency waves have little energy and are normally harmless. High-frequency waves have a lot of energy and are potentially very harmful.
molecule	organism	ecosystem	alive	Something that has all of the characteristics of life is considered to be what?	There is not just one distinguishing feature that separates a living thing from a non-living thing. A cat moves but so does a car. A tree grows bigger, but so does a cloud. A cell has structure, but so does a crystal. Biologists define life by listing characteristics that living things share. Something that has all of ...
genomes	proteins	iron levels	alleles	What do the letters in our blood types represent?	Another exception to Mendel's laws is a phenomenon called codominance . For example, our blood type shows codominance. Do you know what your blood type is? Are you A? O? AB? Those letters actually represent alleles. Unlike other traits, your blood type has three alleles, instead of two!.
digestive cycle	respiratory cycle	reproductive cycle	calvin cycle	The two stages of photosynthesis are the light reactions and what?	The two stages of photosynthesis are the light reactions and the Calvin cycle. Do you see how the two stages are related?.
oxygen	heat	molecules	nutrients	What do living things need to survive?	There are three main ocean zones based on distance from shore. They are the intertidal zone , neritic zone , and oceanic zone . Distance from shore influences how many nutrients are in the water. Why? Most nutrients are washed into ocean water from land. Therefore, water closer to shore tends to have more nutrients. Li...
cores	lattices	isotopes	orbitals	The denser regions of the electron cloud are called what?	Some regions of the electron cloud are denser than others. The denser regions are areas where electrons are most likely to be. These regions are called orbitals . Each orbital has a maximum of just two electrons. Different energy levels in the cloud have different numbers of orbitals. Therefore, different energy levels...
molecule	ecosystem	world	system	In studying energy, what term do scientists use to refer to the matter and its environment involved in energy transfers?	6.3 The Laws of Thermodynamics In studying energy, scientists use the term “system” to refer to the matter and its environment involved in energy transfers. Everything outside of the system is called the surroundings. Single cells are biological systems. Systems can be thought of as having a certain amount of order. It...
ion exchange	evaporation	entropy	energy	To measure what changes that occur in chemical reactions, chemists usually use a related thermodynamic quantity, calledenthalpy?	(a) Initially, the system (a copper penny and concentrated nitric acid) is at atmospheric pressure. (b) When the penny is added to the nitric acid, the volume of NO2 gas that is formed causes the piston to move upward to maintain the system at atmospheric pressure. In doing so, the system is performing work on its surr...
equality	balance	stability	equilibrium	A system in what state cannot spontaneously change, and therefore can do no work?
complement	Invasive	Leader	keystone	What is a species that plays an especially important role in it's community called?	Some predator species are known as keystone species. A keystone species is one that plays an especially important role in its community. Major changes in the numbers of a keystone species affect the populations of many other species in the community. For example, some sea star species are keystone species in coral reef...
birth rate	population density	emigration	growth rate	What term that shows how fast a population is growing includes new members added to the population over a given period, as well as old members removed from the population?	The population growth rate is how fast a population is growing. The letter r stands for the growth rate. The growth rate equals the number of new members added to the population in a year for each 100 members already in the population. The growth rate includes new members added to the population and old members removed...
Venus	jupiter	Neptune	saturn	The rings of what planet can be easily seen from earth?	All of the outer planets have numerous moons. They also have planetary rings made of dust and other small particles. Only the rings of Saturn can be easily seen from Earth.
Mars	sirius	Mercury	uranus	What planet is a blue green color?	Uranus is a lot like Jupiter and Saturn. The planet is composed mainly of hydrogen and helium. There is a thick layer of gas on the outside. Further on the inside is liquid. But Uranus has a higher percentage of icy materials than Jupiter and Saturn. These materials include water, ammonia, and methane. Uranus is also d...
particles	Phenols	gas	hydrocarbons	The simplest class of organic compounds is the what?	isolating the individual components, preservationists are better able to determine the condition of an object and those books and documents most in need of immediate protection. The simplest class of organic compounds is the hydrocarbons, which consist entirely of carbon and hydrogen. Petroleum and natural gas are comp...
crust	shelf	mantel	core	Some meteorites are made of iron and nickel and are thought to be very similar to what part of the earth?	Scientists study meteorites to learn about Earth’s interior. Meteorites formed in the early solar system. These objects represent early solar system materials. Some meteorites are made of iron and nickel. They are thought to be very similar to Earth's core ( Figure below ). An iron meteorite is the closest thing to a s...
posterior pathway	dual pathway	cranial pathway	trigeminal pathway	Which pathway carries somatosensory information from the face, head, mouth, and nasal cavity?	The trigeminal pathway carries somatosensory information from the face, head, mouth, and nasal cavity. As with the previously discussed nerve tracts, the sensory pathways of the trigeminal pathway each involve three successive neurons. First, axons from the trigeminal ganglion enter the brain stem at the level of the p...
volume	direction	density	velocity	The amount of kinetic energy in a moving object depends directly on its mass and what else?	The amount of kinetic energy in a moving object depends directly on its mass and velocity. An object with greater mass or greater velocity has more kinetic energy. You can calculate the kinetic energy of a moving object with this equation:.
metabolism	anaerobic	exercise	aerobic	Cycling, shoveling snow and cross-country skiing are examples of what kind of heart-strengthening activity?	When done regularly, aerobic activities, such as cycling, make the heart stronger. Other aerobic activities include mowing lawn, shoveling snow and cross country skiing.
molecules	semi-fluids	fluids	gases	What take the shape of their container, and are relatively easy to compress?	The story is quite different for gases. Gases take the shape of their container, and they are relatively easy to compress. There are fewer gas particles per unit volume than for the same substance in the liquid or solid form. In fact, the liquid form of a given material is generally several hundred times more dense tha...
steam	clouds	humidity	wind	What is moving air called?	Moving air, like moving water, causes erosion. Moving air is called wind.
behavior reproduction	irreversible reproduction	Matching	lifelong reproduction	What property makes bone marrow cells ideal for gene therapy?
titantium and copper	silicon and gold	silver and gold	silicon and germanium	What is the name of the two metalloids in the carbon group called?	Group 14 is called the carbon group. This group contains two metalloids: silicon and germanium. Carbon is a nonmetal, and the remaining elements in this group are metals.
transition zone	euphotic zone	eccentric zone	aphotic zone	What is the name of the zone where water is deeper than 200 meters called?	The aphotic zone is water deeper than 200 meters. This is where too little sunlight penetrates for photosynthesis to occur. As a result, producers must make "food" by chemosynthesis , or the food must drift down from the water above.
thermal	mechanical	solar	radiation	Diagnosing and treating cancer is a beneficial use of what potentially dangerous energy?	Radiation has several important uses, including diagnosing and treating cancer.
fruit	peanuts	meat	milk	Many adults and some children suffer from a deficiency of lactase. these individuals are said to be lactose intolerant because they cannot digest the lactose found in what?	Many adults and some children suffer from a deficiency of lactase. These individuals are said to be lactose intolerant because they cannot digest the lactose found in milk. A more serious problem is the genetic disease galactosemia, which results from the absence of an enzyme needed to convert galactose to glucose. Cer...
heat	magnetism	gravity	electricity	Three-prong plugs, circuit breakers, and gfci outlets are safety features that recognize the danger of what?	Because electricity can be so dangerous, safety features are built into modern electric circuits and devices. They include three-prong plugs, circuit breakers, and GFCI outlets. You can read about these three safety features in the Figure below . You can learn more about electric safety features in the home by watching...
molecular bonds	liquid bonds	crystals bonds	chemical bonds	Catabolic reactions break down large organic molecules into smaller molecules, releasing the energy contained in what?	Catabolic Reactions Catabolic reactions break down large organic molecules into smaller molecules, releasing the energy contained in the chemical bonds. These energy releases (conversions) are not 100 percent efficient. The amount of energy released is less than the total amount contained in the molecule. Approximately...
motion	sunlight	erosion	precipitation	In qualitative analysis, reagents are added to an unknown chemical mixture in order to induce what?	Selective precipitation can also be used in qualitative analysis. In this method, reagents are added to an unknown chemical mixture in order to induce precipitation. Certain reagents cause specific ions to precipitate out; therefore, the addition of the reagent can be used to determine whether the ion is present in the...
wars	volcanos	factories	human actions	While climate change in earth history was due to natural processes, what is primarily to blame for recent global warming?	Climate change in Earth history was due to natural processes. Recent global warming is due mainly to human actions. The burning of fossil fuels releases greenhouse gases into the air. This creates greater greenhouse effect and global warming.
diploid life cycle	binary life cycle	metamorphic cycle	haploid life cycle	What is the simplest life cycle?	The haploid life cycle ( Figure below ) is the simplest life cycle. It is found in many single-celled organisms. Organisms with a haploid life cycle spend the majority of their lives as haploid gametes. When the haploid gametes fuse, they form a diploid zygote. It quickly undergoes meiosis to produce more haploid gamet...
Coriolis effect	the Sun	axial tilt	gravity	What keeps the moon orbiting earth?	Gravity keeps the Moon orbiting Earth. Gravity keeps the planets orbiting the Sun.
inept bonds	soluble bonds	magnetic bonds	ionic bonds	What are formed by the attraction between oppositely charged ions?	Ionic bonds are formed by the attraction between oppositely charged ions.
hippocampus	lymph glands	pancreas	hypothalamus	What produces hormones that directly regulate body processes?	The hypothalamus also produces hormones that directly regulate body processes. For example, it produces antidiuretic hormone. This hormone travels to the kidneys and stimulates them to conserve water by producing more concentrated urine.
regression	devolution	emergence	evolution	Comparing anatomy, and characterizing the similarities and differences, provides evidence of what process?	Take a close look at this gorilla hand. The similarities to a human hand are remarkable. Comparing anatomy, and characterizing the similarities and differences, provides evidence of evolution.
nitrogen	helium	carbon	silicon	What is the second most abundant element in the earth's crust?	What is this intricate orb? It is the greatly magnified skeleton of single-celled ocean organisms call radiolarian. The skeleton is made of an element that is extremely common on Earth. In fact, it is the second most abundant element in Earth’s crust. It is also one of the most common elements in the entire universe. W...
possible genetics	impossible genetics	inverse genetics	reverse genetics	Which kind of genetics approach involves mutating or deleting genes provides researchers with clues about gene function?	Watch this short video (http://openstaxcollege. org/l/transgenic) explaining how scientists create a transgenic animal. Although the classic methods of studying the function of genes began with a given phenotype and determined the genetic basis of that phenotype, modern techniques allow researchers to start at the DNA ...
mammals	enzymes	spiders	insects	More than half of all known organisms are what?	The majority of arthropods are insects (Class Insecta). In fact, more than half of all known organisms are insects. There may be more than 10 million insect species in the world, although most of them have not yet been identified. In terms of their numbers and diversity, insects clearly are the dominant animals in the ...
process sugar	dilute carbohydrates	convert starches	to synthesize glycogen	For what purpose does liver use the excess carbohydrate?	Obesity With obesity at high rates in the United States, there is a public health focus on reducing obesity and associated health risks, which include diabetes, colon and breast cancer, and cardiovascular disease. How does the food consumed contribute to obesity? Fatty foods are calorie-dense, meaning that they have mo...
nitrogen	carbon	hydrogen	hydrogen	Saturn is made mostly of helium and what else?	Saturn’s composition is similar to Jupiter's. The planet is made mostly of hydrogen and helium. These elements are gases in the outer layers and liquids in the deeper layers. Saturn may also have a small solid core. Saturn's upper atmosphere has clouds in bands of different colors. These clouds rotate rapidly around th...
saturated	insulated	strong	unsaturated	What are alkenes organic compounds that contain one or more double or triple bonds between carbon atoms described as?	Alkenes Organic compounds that contain one or more double or triple bonds between carbon atoms are described as unsaturated. You have likely heard of unsaturated fats. These are complex organic molecules with long chains of carbon atoms, which contain at least one double bond between carbon atoms. Unsaturated hydrocarb...
horizontal bonds	weak bonds	soluble bonds	ionic bonds	Electrons in covalent compounds are shared between the two atoms, unlike the case in what type of bonds?	The two materials do have at least one thing in common. The atoms in the materials are held together by covalent bonds. These bonds consist of electrons shared between two or more atoms. Unlike ionic bonds, where electrons are either lost or gained by an atom to form charged ions, electrons in covalent compounds are sh...
turbulence	permeability	elasticity	viscosity	What is the resistance of a liquid to flow called?	Viscosity (η) is the resistance of a liquid to flow. Some liquids, such as gasoline, ethanol, and water, flow very readily and hence have a low viscosity. Others, such as motor oil, molasses, and maple syrup, flow very slowly and have a high viscosity. The two most common methods for evaluating the viscosity of a liqui...
electrons	molecules	components	nucleus	The mass of atoms is based on the number of protons and neutrons in what?	Atoms have a mass that is based largely on the number of protons and neutrons in their nucleus.
in tide pools	attached to marine life	in coral reefs	the ocean floor	Where do polychaete worms live?	Annelids called polychaete worms live on the ocean floor. They may be filter feeders, predators, or scavengers. The amazing feather duster worm in Figure below is a polychaete that has a fan-like crown of tentacles for filter feeding.
geomorphology	heredity	lithography	biogeography	What is the study of how and why plants and animals live where they do?	Biogeography is the study of how and why plants and animals live where they do. It provides more evidence for evolution. Let’s consider the camel family as an example.
posterior thorax	inferred thorax	analogous thorax	posterior thorax	Muscles that position the pectoral girdle are located either on the anterior thorax or on this?	Muscles That Position the Pectoral Girdle Muscles that position the pectoral girdle are located either on the anterior thorax or on the posterior thorax (Figure 11.22 and Table 11.8). The anterior muscles include the subclavius, pectoralis minor, and serratus anterior. The posterior muscles include the trapezius, rhomb...
perennials and annuals	flowers and fruits	deciduous and evergreen	gymnosperms and angiosperms	What are the two major types of seed plants called?	The two major types of seed plants are the gymnosperms (seeds in cones) and angiosperms (seeds in ovaries of flowers). Figure below shows how the seeds of gymnosperms and angiosperms differ. Do you see the main difference between the two seeds? The angiosperm seed is surrounded by an ovary .
chloride	sugar	insulin	glucose	What do we call the energy-rich product of photosynthesis?	Glucose is the energy-rich product of photosynthesis, a universal food for life. It is also the primary form in which your bloodstream delivers energy to every cell in your body.
mean diffusion	hard diffusion	brain diffusion	simple diffusion	How is oxygen transferred into the bloodstream?	The oxygen enters the bloodstream from the alveoli , tiny sacs in the lungs where gas exchange takes place ( Figure below ). The transfer of oxygen into the blood is through simple diffusion.
bacteria	insects	viruses	fungi	Ringworm and athlete's foot are human diseases caused by what simple organisms?	Fungi are simple eukaryotic organisms that consist of one or more cells. They include mushrooms and yeasts. Human diseases caused by fungi include ringworm and athlete’s foot. Both are skin diseases that are not usually serious. A ringworm infection is pictured below ( Figure below ). A more serious fungus disease is h...
transmission	compression	pressurization	acceleration	What is the measure of the change in the velocity of a moving object called?	A car’s gas pedal, like the one in Figure below , is sometimes called the accelerator. That’s because it controls the acceleration of the car. Pressing down on the gas pedal gives the car more gas and causes the car to speed up. Letting up on the gas pedal gives the car less gas and causes the car to slow down. Wheneve...
surgery	physical therapy	pesticides	antibiotics	What is the usual treatment for acute bronchitis?	Bronchitis is an inflammation of the bronchi, the air passages that conduct air into the lungs. The bronchi become red and swollen with infection. Acute bronchitis is usually caused by viruses or bacteria, and may last several days or weeks. It is characterized by a cough that produces phlegm, or mucus. Symptoms includ...
carnivores	rodents	insects	primates	What are generally divided into prosimian and non-prosimian?	Primates are generally divided into prosimian and non-prosimian primates.
animals	planets	oceans	continents	The creation and destruction of oceanic crust is the reason what moves?	In some places, the oceanic crust comes up to a continent. The moving crust pushes that continent away from the ridge axis as well. If the moving oceanic crust reaches a deep sea trench, the crust sinks into the mantle. The creation and destruction of oceanic crust is the reason that continents move.
character development	feature displacement	character concept	character displacement	What is the concept by which two species within the same area to coexist by adapting by developing different specializations?	Looking at different types of competition, ecologists developed the competitive exclusion principle . The principle states that species less suited to compete for resources will either adapt, move from the area, or die out. In order for two species within the same area to coexist, they may adapt by developing different...
solar energy	light	magnetic fields	electricity	A turbine that spins a generator will produce?	You can follow the operation of an electricity-generating fission reactor in the image above. The reactor core is submerged in a pool of water. The heat from the fission reaction heats the water, which is pumped into a heat exchange container. There the heated water boils the water in the heat exchanger. The produced s...
fibers	ions	seeds	spores	Meiosis in the sporophyte produces haploid cells called what?
double-replacement reaction	replication reaction	polar reaction	single-replacement reaction	In this type of reaction, an element replaces another element in a compound, and the element is in any state of matter but is not an ion?	A single-replacement reaction is one in which an element replaces another element in a compound. An element is in either the solid, liquid, or gas state and is not an ion. The example below shows the reaction of solid magnesium metal with aqueous silver nitrate to form aqueous magnesium nitrate and silver metal.
DNA and Eukaryotes	bacteria and eukaryotes	chromosomes and eukaryotes	prokaryotes and eukaryotes	What are the two distinct types of cells found in the animal kingdom?
halogens	nonmetals	noble gases	metals	What category of elements are chacterized by their ability to reflect light, called luster, their high electrical and thermal conductivity, their high heat capacity, and their malleability and ductility?	Metallic Solids Metals are characterized by their ability to reflect light, called luster, their high electrical and thermal conductivity, their high heat capacity, and their malleability and ductility. Every lattice point in a pure metallic element is occupied by an atom of the same metal. The packing efficiency in me...
dry plants	uncommon plants	dead plants	flowering plants	Angiosperms are also known as what?	Introduction Plants are as essential to human existence as land, water, and air. Without plants, our day-to-day lives would be impossible because without oxygen from photosynthesis, aerobic life cannot be sustained. From providing food and shelter to serving as a source of medicines, oils, perfumes, and industrial prod...
viruses	pathogens	algae	bacteria	An estimated 100 trillion of these live in the gut of an average person?	It is estimated that 100 trillion bacteria live in the gut. This is more than the human cells that make up you. It has also been estimated that there are more bacteria in your mouth than people on the planet. There are over 7 billion people on the planet.
mutations	reflex behaviors	hair growth	body temperature	The ability to regulate what, which is possessed by mammals, was an advantage as earth’s climate went through sudden and dramatic changes?	Mammals have the ability to regulate body temperature. This is an advantage, as Earth’s climate went through sudden and dramatic changes. Mastodons, saber tooth tigers, hoofed mammals, whales, primates and eventually humans all lived during the Cenozoic Era ( Figure below ).
recombinant dna	models dna	addition dna	satellite dna	What is the term for very large arrays of tandemly repeating, non-coding dna?	The majority of the human genome is non-coding sequence. These sequences include regulatory sequences, and DNA with unknown functions. These sequences include tandem repeat elements known as satellite DNA , and transposons. Satellite DNA consists of very large arrays of tandemly repeating, non-coding DNA. The repeating...
topographic	basic	country	bathymetric	What kind of map can show the features of the bottom of a body of water?	Oceanographers use bathymetric maps to show the features of the bottom of a body of water.
changing	Stagnation	regulating	migration	What evolved, adapted response to resource availability is the long-range seasonal movement of animals?	Migration Migration is the long-range seasonal movement of animals. It is an evolved, adapted response to variation in resource availability, and it is a common phenomenon found in all major groups of animals. Birds fly south for the winter to get to warmer climates with sufficient food, and salmon migrate to their spa...

Subsets and Splits

No community queries yet

The top public SQL queries from the community will appear here once available.