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A community of organisms along with the surrounding physical environment constitutes a(n)


A) biosphere.
B) ecosystem.
C) population.
D) habitat.
E) community.

F) A) and D)
G) C) and D)

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While exploring a river deep in the Amazon, you discover a new protists. The protist is green and photosynthesizes. In which supergroup will your new protist be classified?


A) SAR
B) Archaeplastida
C) Excavata
D) Amoebozoa
E) Opisthokonta

F) C) and D)
G) A) and B)

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You are conducting an experiment to determine which brand of fertilizer results in the greatest amount of fruit production by tomato plants. In this example, the response variable would be the


A) brand of fertilizer.
B) unfertilized tomato plants.
C) fertilized tomato plants.
D) amount of fruit produced by the tomato plants.
E) variety of tomato plants.

F) B) and E)
G) A) and B)

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When you are overheated, you perspire, and when you are too cold, you shiver to generate heat. Which property of life is best represented by this example?


A) homeostasis
B) development
C) behavior
D) organization
E) adaptation

F) C) and D)
G) B) and E)

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The bones in a bird are hollow, reducing its weight for flight. This is an example of which characteristic of life?


A) Living organisms grow and develop.
B) Living organisms acquire materials and energy from the environment.
C) Living organisms reproduce.
D) Living organisms adapt to their environment.
E) Living organisms are homeostatic.

F) None of the above
G) C) and D)

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Some students consume large amounts of coffee and so-called energy drinks to help them stay alert when studying. You notice that many who engage in this practice seem to do poorly on exams. Suppose you want to investigate the relationship between caffeine consumption and exam performance. Which of the following statements would be an appropriate hypothesis?


A) Students who consume large amounts of caffeine while studying will have lower exam scores than those who consume less caffeine.
B) One should avoid consuming too much caffeine while studying.
C) Too much caffeine is harmful to your health.
D) Many students consume large amounts of caffeine while studying.
E) Caffeine increases alertness but also increases anxiety.

F) All of the above
G) A) and E)

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You are conducting an experiment to determine what concentration of disinfectant is most effective in killing bacteria. In this example, the concentration of disinfectant would represent the


A) control.
B) experimental variable.
C) response variable.
D) data.
E) hypothesis.

F) D) and E)
G) B) and C)

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Which answer choice lists the steps of the scientific method in the correct order?


A) hypothesis, observation, experiment, conclusion, data collection
B) conclusion, hypothesis, observation, experiment, data collection
C) observation, hypothesis, experiment, data collection, conclusion
D) observation, experiment, hypothesis, conclusion, data collection
E) data collection, conclusion, hypothesis, experiment, observation

F) A) and B)
G) C) and E)

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An informed statement that can be tested in a manner suited to the processes of science is known as a


A) hypothesis.
B) phenomenon.
C) control.
D) variable.
E) theory.

F) All of the above
G) B) and E)

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Technology is the


A) application of scientific knowledge to the interests of humans.
B) study of living organisms.
C) study of the interactions between living organisms and their environment.
D) application of common knowledge for a practical purpose.
E) application of laws to benefit society.

F) A) and D)
G) C) and D)

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If a new anti-cancer drug is found to be effective in initial tests with mice, what might researchers conclude?


A) If the drug was effective in a large number of mice, it will therefore be effective in humans.
B) If the drug was effective in a small proportion of mice, it will be effective in a small proportion of humans.
C) The mice have provided a positive control in this experiment that proves the drug is effective in humans.
D) The drug is effective in the mouse model; it must still be tested in humans.
E) The effect of the drug on mice has no bearing on the effect of the drug on humans.

F) A) and E)
G) B) and C)

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Which domains contain organisms that lack a membrane-bound nucleus?


A) Archaea and Bacteria
B) Archaea and Eukarya
C) Bacteria and Eukarya
D) Eukarya and Animalia
E) Archaea and Animalia

F) B) and E)
G) C) and E)

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Which of the following statements regarding the scientific method are true? Check all that apply.


A) Deductive reasoning is used to form a hypothesis.
B) Observations are used to form a hypothesis.
C) Experiments need to be repeatable.
D) The control and experimental groups are identical except for one variable.
E) The response variable is also known as the independent variable.

F) C) and D)
G) B) and D)

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The term "biodiversity" refers to


A) a study of the physical, non-living components of an ecosystem.
B) the similarities between species.
C) the rate of extinction of species due to human activities.
D) the total number of species, variation of species, and the ecosystems in which they live.
E) the study of food chains within an ecosystem.

F) A) and D)
G) A) and C)

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When researchers test a new human cancer drug using mice, the mice constitute the


A) hypothesis.
B) data.
C) experimental design.
D) model.
E) control.

F) B) and D)
G) A) and C)

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Which of these is an example of inductive reasoning used to form a hypothesis?


A) Every fungus that has ever been studied absorbs its food; therefore, food absorption is characteristic of fungi.
B) All fungi absorb their food; if mushrooms are fungi, then the mushroom absorbs its food.
C) A mushroom is classified in the kingdom Fungi of the domain Eukarya.
D) The cell from a mushroom has a nucleus.
E) Fungi are not capable of photosynthesis.

F) C) and D)
G) A) and C)

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Which of the following is one of the domains of life?


A) Animalia
B) Eukarya
C) Plantae
D) Protista
E) Fungi

F) None of the above
G) A) and B)

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Which sequence of classification categories is in the proper order from least to most inclusive?


A) genus, class, kingdom, domain, order, phylum, species, family
B) domain, class, genus, family, species, order, phylum, kingdom
C) species, genus, family, order, class, phylum, kingdom, domain
D) genus, species, order, class, family, kingdom, domain, phylum
E) species, genus, family, class, order, phylum, kingdom, domain

F) A) and B)
G) All of the above

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