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What can be said about the polarity of water?
A. It causes water molecules to be attracted to other water molecules.
B. It's the result of a slightly positive charge on the oxygen end of water.
C. It's the result of a slightly negative charge on the hydrogen end of water.
D. It prevents hydrogen bonds from forming between water molecules.
A. It causes water molecules to be attracted to other water molecules.
6. Which of the following is not a result of air pollution?
A. Global warming
B. Breathing problems
C. Soil erosion
D. Smog
C. Soil erosion
12. A pyramid of numbers differs from a pyramid of energy because it
A. is organized by trophic levels, while a pyramid of energy isn't.
B. displays the number of organisms at each trophic level.
C. attempts to describe a food chain or food web.
D. shows the amount of energy within each trophic level.
B. displays the number of organisms at each trophic level.
17. Which of the following accurately describes nutrient limitation?
A. Soil environments aren't affected by nutrient limitation.
B. Limiting nutrients are the nutrients whose supply is in excess.
C. If one essential nutrient within an ecosystem runs out, primary productivity will be limited.
D. Nitrogen is typically the limiting nutrient in freshwater environments.
C. If one essential nutrient within an ecosystem runs out, primary productivity will be limited.
22. Sodium's atomic number is 11. What does this tell you about an atom of sodium?
A. It has 11 protons to lose in ionic bonds.
B. It contains 11 protons.
C. Its atomic mass is double this amount.
D. It contains 11 neutrons.
B. It contains 11 protons.
2. If a scientist is observing biotic and abiotic factors, which of the following level of organism must she be
studying?
A. A community
B. An ecosystem
C. An individual organism
D. A population
B. An ecosystem
7. Unlike food webs, food chains
A. involve a network of complex interactions among various organisms in an ecosystem.
B. involve a single chain of energy transfer from one organism to another through consumption.
C. contain consumers that eat producers.
D. contain autotrophs that make their own food.
B. involve a single chain of energy transfer from one organism to another through consumption.
13. Chemical bonds
A. are always ionic.
B. are always covalent.
C. hold atoms together to form compounds.
D. combine compounds to form elements.
C. hold atoms together to form compounds.
18. Which of the following marine ecosystems consists of an aphotic zone?
A. The intertidal zone
B. The coastal ocean
C. The wetland
D. The open ocean
D. The open ocean
23. All of the following are examples of density-dependent limiting factors except
A. overcrowding.
B. competition.
C. hurricanes.
D. predators.
C. hurricanes.
3. Which big idea in biology revolves around the idea that all life forms on Earth are connected and linked to one
another as well as the land, water, and air around them?
A. Interdependence in nature
B. Information and heredity
C. Structure and function
D. Science as a way of knowing
A. Interdependence in nature
Which of the following statements accurately describes enzymes?
A. Enzymes slow chemical reactions.
B. Temperature and pH can affect how enzymes work.
C. Enzymes increase the activation energy of reactions.
D. Many different types of substrates with different shapes can bind to a single enzyme.
B. Temperature and pH can affect how enzymes work.
14. Which of the following is not a part of the peer review process or its result?
A. Enabling scientists to review each other's work in publications
B. Allowing scientists to share ideas through published work
C. Making sure that a piece of work is correct and includes bias
D. Ensuring that work meets the standards of the scientific community
C. Making sure that a piece of work is correct and includes bias
19. Within a single use of the scientific method, which of the following steps can only be performed after data is
collected?
A. Controls and variables are chosen.
B. Conclusions are drawn.
C. The initial experiment is designed.
D. The initial hypothesis is formed.
D. The initial hypothesis is formed.
24. Which of the following can be said about the use of agriculture?
A. It has included practices that led to pollution of soil and water.
B. It bears no effect on the environment.
C. It prohibited the use of machinery.
D. It stunted the growth of civilization and development.
A. It has included practices that led to pollution of soil and water.
4. Which of the following is NOT true about performing biological investigations?
A. The metric system and the revised SI are based on multiples of 10.
B. Most scientists do not use the metric system or SI.
C. Scientists are trained to conduct their investigations safely.
D. Reading and understanding the steps before conducting an experiment is necessary for safety.
B. Most scientists do not use the metric system or SI.
10. Which of the following steps is an important part of the process by which ecology guides humans to a sustainable future?
A. Behavior is changed after the cause of the problem is identified.
B. Behavior remains unchanged after the root of a problem is identified.
C. The causes behind problems aren't identified or studied.
D. The problems plaguing ecology are ignored.
A. Behavior is changed after the cause of the problem is identified.
15. Which of the following is characteristic of the second stage within a demographic transition?
A. The birth rate and death rate are equally high.
B. The birth rate continues to climb to meet the death rate.
C. The birth rate falls to meet the death rate.
D. The death rate begins to fall, but birth rates remain high for a time.
D. The death rate begins to fall, but birth rates remain high for a time.
20. Unlike weather, climate
A. involves variations in precipitation.
B. describes the day-to-day condition of the atmosphere of Earth.
C. involves variations in temperature.
D. describes the average conditions and atmospheric patterns of a region over time.
D. describes the average conditions and atmospheric patterns of a region over time.
25. Which of the following could be said about ecological footprints?
A. The average ecological footprints for various countries are nearly identical.
B. Exact ecological footprints are often difficult to calculate, but estimates can be useful in comparing
populations.
C. Ecological footprints don't take into account resources needed to absorb and manage wastes.
D. Ecological footprints can't be used to determine carrying capacity.
B. Exact ecological footprints are often difficult to calculate, but estimates can be useful in comparing populations.
5. Which of the following accurately describes carbon atoms?
A. When carbon atoms bond to other carbon atoms, they can only form triple bonds.
B. Carbon atoms can bond to other carbon atoms.
C. Carbon atoms are only found in two of the four main macromolecules.
D. Carbon atoms only have three electrons available for bonding.
B. Carbon atoms can bond to other carbon atoms.
11. Which of the following is a value of biodiversity?
A. Healthy ecosystems
B. Climate change
C. Pollution
D. Invasive species
A. Healthy ecosystems
16. Compared to atoms of the same element, isotopes have different
A. numbers of protons.
B. numbers of neutrons.
C. types of subatomic particles.
D. numbers of electrons.
B. numbers of neutrons.
21. Which of the following best describes the influence of latitude on climate?
A. Polar regions receive less solar energy and heat per unit area than tropical regions.
B. Earth's climate zones are produced by the equal distribution of the sun's heat across the Earth's surface.
C. Temperate regions receive more solar energy and heat per unit area than tropical regions.
D. Less direct solar energy affects areas near the equator than it does at the poles.
A. Polar regions receive less solar energy and heat per unit area than tropical regions.
26. Unlike an animal's habitat, an animal's niche can be described by all of the following except
A. the way the species obtains what it needs to reproduce.
B. the job the organism has within its environment.
C. the place in which the species lives.
D. the way the species obtains what it needs to survive.
C. the place in which the species lives.