question stringlengths 68 502 | answer stringclasses 4
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|---|---|
Question: Why does water infiltrate the ground?
Options:
A. prolonged drought conditions
B. run-off from flooding
C. because soil and rocks are porous
D. gravity | C |
Question: What is the upward force exerted by fluids when any object, such as a boat, is placed in it?
Options:
A. human force
B. atomic force
C. bouyant force
D. impetuous force | C |
Question: What do dendrites receive signals from?
Options:
A. hormones
B. fibers
C. neurons
D. electrons | C |
Question: What is the term for the exchange of genetic material between non-sister chromatids of homologous chromosomes?
Options:
A. inheritance
B. meiosis
C. asexual reproduction
D. crossing-over | D |
Question: What must be overcome to change the motion of an object?
Options:
A. weight
B. inertia
C. density
D. pressure | B |
Question: Which action of the stomach helps chemical digestion by gastric juice?
Options:
A. chewing
B. churning action
C. contraction
D. peristalsis | B |
Question: What two lenses comprise a compound microscope?
Options:
A. concave and convex
B. scope and focus
C. polarized and focal
D. objective and eyepiece | D |
Question: Physical and chemical differences help ecologists distinguish between freshwater and marine types of what?
Options:
A. biomes
B. cities
C. habitats
D. microbiomes | A |
Question: What are the organic compounds that the body needs in small amounts to function properly; humans need 13 different ones?
Options:
A. nutrients
B. proteins
C. vitamins
D. minerals | C |
Question: To undo the tarnish on copper pennies, you can place them in what liquid?
Options:
A. honey
B. seawater
C. vinegar
D. distilled water | C |
Question: What kind of bonding between alcohol molecules means that more energy is required to convert the liquid to vapor, and boiling points are therefore high?
Options:
A. stronger mineral bonding
B. stronger diffusion bonding
C. stronger hydrogen bonding
D. weaker carbon bonding | C |
Question: During summer in the northern hemisphere, the north pole is tilted toward what?
Options:
A. the north star
B. horizon
C. sun
D. moon | C |
Question: Also called lodestone, the mineral magnetite is the most powerful what?
Options:
A. natural permanent magnet
B. healing magnet
C. synthetic magnet
D. material on Earth | A |
Question: How many valves are in the heart?
Options:
A. six
B. two
C. four
D. one | C |
Question: Momentum is directly related to both mass and?
Options:
A. speed
B. intensity
C. velocity
D. mass | C |
Question: Bones are made up of different types of what?
Options:
A. fiber
B. tissue
C. blood cells
D. cartilage | B |
Question: What do metals typically lose to achieve stability?
Options:
A. electrons
B. atoms
C. ions
D. molecules | A |
Question: What happens when a sperm and an egg cell combine?
Options:
A. fertilization
B. manipulation
C. stimulation
D. migration | A |
Question: What is the ability to change or move matter?
Options:
A. volume
B. energy
C. density
D. temperature | B |
Question: How many weeks are in the life cycle of ladybugs
Options:
A. two to four
B. nine to six
C. four to six
D. three to six | C |
Question: What is the respiratory pigment of almost every vertebrate?
Options:
A. iron
B. insulin
C. hemoglobin
D. plasma | C |
Question: Objects moving at different speeds, in different directions have different what?
Options:
A. electrons
B. velocities
C. vibrations
D. protons | B |
Question: What type of compounds make up the cells and tissues of organisms?
Options:
A. organic compounds
B. productive compounds
C. hormonal compounds
D. biochemical compounds | D |
Question: Meiosis and what process are both preceded by one round of dna replication; however, they differ in producing haploid or diploid daughter cells?
Options:
A. photosynthesis
B. cloning
C. mitosis
D. fertilization | C |
Question: In their pure form, all elements have an oxidation number of what?
Options:
A. 2
B. zero
C. 3
D. 7 | B |
Question: What is a close relationship between two species in which at least one species benefits called?
Options:
A. parasitic
B. symbiosis
C. morphogenesis
D. competition | B |
Question: Multiple sclerosis, huntington’s disease, parkinson’s disease, and alzheimer’s disease are example of diseases of which body system?
Options:
A. lymphatic system
B. muscular system
C. nervous system
D. circulatory system | C |
Question: What includes the living organisms in an area and the non-living aspects of the environment?
Options:
A. habitat
B. degradation
C. ecosystem
D. outpost | C |
Question: Bacteria may become untreatable if they develop what in response to multiple antibiotics?
Options:
A. acceptance
B. resistance
C. weakness
D. affinity | B |
Question: What grows through blue cheese that gives it the distinctive appearance and flavor?
Options:
A. fungus
B. Bacteria
C. Roots
D. Viruses | A |
Question: The two main types of phagocytic cells in the mammalian body are neutrophils and what other?
Options:
A. histones
B. leukocytes
C. eukaryotes
D. macrophages | D |
Question: What is aggravated by practices such as logging, mining, construction, and paving surfaces?
Options:
A. soil erosion
B. seismic activity
C. water pollution
D. global warming | A |
Question: What type of hydrocarbon is coal?
Options:
A. gas
B. liqued
C. mineral
D. solid | D |
Question: What chemicals in the liver support glucose homeostasis?
Options:
A. lactobacilli and insulin
B. cytosol and insulin
C. Force and insulin
D. glucagon and insulin | D |
Question: When resources become limiting, populations follow a logistic growth curve in which the size will level off at a point called what?
Options:
A. carrying capacity
B. believed capacity
C. full capacity
D. containing capacity | A |
Question: Along with climate, this also influences the type of vegetation that can grow in the region?
Options:
A. fertilizer use
B. soil type
C. population density
D. gravity | B |
Question: What is defined as anything that takes up space and has mass?
Options:
A. elements
B. electrons
C. atoms
D. matter | D |
Question: What is the name of the simplest carbon molecule?
Options:
A. Buckminsterfullerine
B. graphite
C. methane
D. butane | C |
Question: Hyperparathyroidism results from an overproduction of what?
Options:
A. elevated hormone
B. inhibited hormone
C. parathyroid hormone
D. tharayroid hormone | C |
Question: What is formed when different gases are confined to the same container?
Options:
A. homogeneous mixture
B. linear mixture
C. compact mixture
D. particulate mixture | A |
Question: What property of fluids causes something to stay on or near the surface of water?
Options:
A. weight
B. buoyancy
C. density
D. strength | B |
Question: What are the tiny sacs in the lungs where gas exchange takes place?
Options:
A. vacuoles
B. ganglion
C. alveoli
D. chambers | C |
Question: What is the stage between a zygote and polyp?
Options:
A. worm
B. larva
C. pupa
D. egg | B |
Question: What is the term for a particle outside the nucleus of an atom that has a negative electric charge?
Options:
A. neutron
B. electron
C. ion
D. proton | B |
Question: Scientists goal is develop nuclear fusion power plants, where the energy from fusion of hydrogen nuclei can be converted to what?
Options:
A. gasoline
B. wind
C. oil
D. electricity | D |
Question: In which state of matter are particles completely separate from one another?
Options:
A. liquid state
B. gaseous state
C. phosphorus state
D. solid state | B |
Question: Van der waals forces are weak interactions between molecules that involve what?
Options:
A. atoms
B. dipoles
C. photons
D. particles | B |
Question: What part of the body does emphysema affect?
Options:
A. heart
B. brain
C. bones
D. lungs | D |
Question: What number is the sum of the numbers of protons and neutrons present in the nucleus of an atom?
Options:
A. nuclear number
B. mass total
C. mass number
D. combined number | C |
Question: What kind of tool, often based on mathematical equations or computer simulations, helps us understand complex systems?
Options:
A. levels
B. planes
C. models
D. panels | C |
Question: An ecosystem consists of all the living things and what?
Options:
A. local environment
B. nonliving environment
C. living environment
D. phosphorescent environment | B |
Question: Mesophyll consists mainly of parenchyma cells specialized for what?
Options:
A. circulation
B. digestion
C. respiration
D. photosynthesis | D |
Question: Antibiotic drugs are usually effective in treating what kind of infections?
Options:
A. viral
B. lethal
C. bacterial
D. biological | C |
Question: What is earth’s geographic north pole also called?
Options:
A. mere north
B. vertical north
C. right north
D. true north | D |
Question: What are the nonliving aspects of the environment called?
Options:
A. metastatic factors
B. abiotic factors
C. nucleic factors
D. antibiotic factors | B |
Question: Chemical reactions follow the laws of what?
Options:
A. quantum physics
B. thermodynamics
C. photosynthesis
D. Newton | B |
Question: What do you call a mixture of two or more substances in which dissolved particles are distributed evenly throughout?
Options:
A. solution
B. water
C. liquid
D. concentrate | A |
Question: What is the water that falls from the sky called?
Options:
A. evaporation
B. precipitation
C. moisture
D. condensation | B |
Question: What returns blood from capillaries to an atrium?
Options:
A. the lymph system
B. the liver
C. arteries
D. veins | D |
Question: Hemolymph bathes organs directly in arthropods and most molluscs, due to an open type of what system?
Options:
A. circulatory
B. nervous
C. pulmonary
D. reproductive | A |
Question: According to the table, aluminum has an atomic number of 13. therefore, every aluminum atom has 13 protons in its what?
Options:
A. components
B. nucleus
C. processes
D. membrane | B |
Question: Anemia, leukemia, hemophilia, and sickle-cell disease are examples of conditions that primarily affect what?
Options:
A. Lungs
B. brain
C. heart
D. blood | D |
Question: What kind of variation does a rate measure?
Options:
A. construction to time
B. property to time
C. environment to time
D. value to time | B |
Question: What is the name of the process that changes some chemical substances into others?
Options:
A. acid reaction
B. chemical reaction
C. mixture
D. hypodermic reaction | B |
Question: What is the term for the gases that surround a planet?
Options:
A. galaxy
B. hemisphere
C. biosphere
D. the atmosphere | D |
Question: Pressure and vibration are examples of what type of stimuli?
Options:
A. atmospheric
B. chemical
C. physical
D. thermal | C |
Question: In the chest, what divides as it enters the lungs to form the right and left bronchi?
Options:
A. Aorta
B. thyroid
C. trachea
D. nerves | C |
Question: When does an oocyte complete meiosis?
Options:
A. metaphase
B. anaphase
C. prophase
D. after sperm penetration | D |
Question: The electroplating process transfers metal from the anode to which part of the cell?
Options:
A. electrode
B. cathode
C. atom tube
D. plasma | B |
Question: Compression, tension and shear refer to what type of force that can cause rock to change?
Options:
A. seismic force
B. process
C. gravity
D. stress | D |
Question: Unlike the biological species concept, the ecological species concept can accommodate asexual as well as ________ species.
Options:
A. homologous
B. artificial
C. sexual
D. homosexual | C |
Question: A basic function of cells includes obtaining what from glucose?
Options:
A. food
B. acids
C. energy
D. proteins | C |
Question: What is the term for a test to see if a scientific explanation is right or wrong?
Options:
A. hypothesis
B. generation
C. invention
D. experiment | D |
Question: When a solvent with a gas dissolved in it is heated, the kinetic energy of both the solvent and solute _________?
Options:
A. decreases
B. generates
C. increases
D. evaporates | C |
Question: How does the bacteria look when seen with the naked eye?
Options:
A. slimy smear
B. oily smear
C. dry smear
D. slippery smear | A |
Question: What is a device used to measure temperature changes during chemical processes called?
Options:
A. altimeter
B. calorimeter
C. alethiometer
D. thermometer | B |
Question: Ebola is an example of a disease spread by what kind of infectious agent?
Options:
A. colds
B. flus
C. virus
D. bacteria | C |
Question: The tiny hair present on mucus membranes is known as?
Options:
A. dendrites
B. tissue
C. collagen
D. cilia | D |
Question: What elements do lipids primarily consist of?
Options:
A. carbon, hydrogen, and oxygen
B. helium, hydrogen , and oxygen
C. iron, hydrogen , and oxygen
D. silicon, hydrogen , and oxygen | A |
Question: Polychaetes make up a large and diverse group. which category do the majority of these worms fall into?
Options:
A. carnivorous
B. marine
C. amphibian
D. terrestrial | B |
Question: What is the main makeup of the cell membrane?
Options:
A. filaments
B. glucose
C. phospholipids
D. antibodies | C |
Question: When a host attacks a parasitic bacteria, the bacteria release what to surround the cell wall?
Options:
A. bacteriophages
B. layer of slime
C. protoplasma
D. pathogens | B |
Question: Solutions can also become supersaturated , where the amount of solute dissolved exceeds what?
Options:
A. its dissolution
B. its concentration
C. its solubility
D. part solubility | C |
Question: What is the biggest risk associated with using nuclear energy?
Options:
A. mutation
B. explosion
C. fire
D. radiation | D |
Question: What property is the result of the force of gravity being opposed by the normal force?
Options:
A. weight
B. density
C. sound
D. light | A |
Question: What are the cliffs called which are created when waves erode a rocky shoreline, leaving a vertical wall of exposed rock layers?
Options:
A. wave - theory
B. widow-makers
C. wave-cut
D. shear face | C |
Question: When boron10 absorbs a neutron, what does it emit?
Options:
A. proteins
B. particle
C. light
D. calcium | B |
Question: What is the most common life form in the ocean?
Options:
A. plankton
B. kelp
C. algae
D. coral | A |
Question: What circulates with the blood or hemolymph and are often contained within specialized cells
Options:
A. structural pigments
B. fat pigments
C. respiratory pigments
D. muscular pigments | C |
Question: What are the two possible reduction products for brf3?
Options:
A. brf and brf4
B. brf and br2
C. brf2 and brf4
D. brg and brf | B |
Question: Normal blood is comprised of nearly half erythrocytes, which is another word for what cells?
Options:
A. plateletes
B. white blood cells
C. monocytes
D. red blood cells | D |
Question: What type of intense storm is a system of winds that rotate around a low pressure center, resulting in swirling air that rises and cools to create clouds and precipitation?
Options:
A. hurricane
B. cyclone
C. monsoon
D. drought | B |
Question: Blood flows into the kidney through which artery?
Options:
A. pulminary artery
B. renal artery
C. main artery
D. blood artery | B |
Question: Growth and development in humans is most rapid during what two stages?
Options:
A. bounce and adolescence
B. teen and adults
C. infancy and adolescence
D. flutter and adolescence | C |
Question: What are used to write nuclear equations for radioactive decay?
Options:
A. chemical symbols
B. energy symbols
C. nuclear symbols
D. special symbols | C |
Question: The pull of gravity is expressed as a force of what?
Options:
A. joule
B. pascal
C. volt
D. newtons | D |
Question: What type of physics explains the behavior of visible light and electromagnetic waves?
Options:
A. Quantum mechanics
B. Thermodynamics
C. optics
D. statistics | C |
Question: The duodenum has a major role in regulating what digestive organ and its emptying?
Options:
A. stomach
B. kidneys
C. skin
D. respiratory | A |
Question: What are misfolded versions of normal brain proteins?
Options:
A. ribosomes
B. protons
C. humans
D. prions | D |
Question: By impacting plant species and the animals they support, destruction of habitat threatens what event?
Options:
A. mutation
B. extinction
C. overpopulation
D. depletion | B |
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