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Which statement is false regarding science?


A) Science helps us to understand the natural world.
B) Science strives to be objective rather than subjective.
C) Correct scientific conclusions are permanent and never subject to change or refinement.
D) Information is gathered by scientific methods.
E) Information is gained by observing and testing.

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

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C

Which of the following might plausibly be said by a scientist?


A) Although no one else gets the same results as I do,since I get the results in my experiments,it is still science.
B) Since all the accumulated body of data support it,a hypothesis is definitely "true."
C) Test methods are unimportant since anyone can run another test; it is the results that make the substance of science.
D) The test's results and conclusion finish the scientist's job; it is enough that a scientist alone now knows the results.
E) There is always a possibility that a more advanced experiment might falsify any hypothesis.

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

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Which of the following is a potential consequence if people stop using technology in the agriculture industry?


A) There could be a significant decrease in the amount of food produced.
B) There would be a collapse of many of the terrestrial ecosystems on Earth.
C) The extinction of the top level species that reside in the communities around the agricultural land.
D) The amount of food produced would increase.
E) None of these consequences will occur if people stop using technology in the agriculture industry.

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

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You have discovered a previously unknown organism.It is multicellular,with a filamentous form,and absorbs food from its environment.Upon microscopic examination,you see that the cells have nuclei.How would you classify this organism?


A) domain Bacteria
B) kingdom Animalia
C) kingdom Protista
D) kingdom Fungi
E) kingdom Plantae

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

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D

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

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Which of the following is of least importance when concerning the preservation of ecosystems?


A) Ecosystem preservation maintains the status of species in their current state.
B) Many different organisms perform services that ensure our continued existence.
C) Humans derive medicines,food,and many important materials from functioning ecosystems.
D) Preservation of ecosystems allows humans to exploit as many resources as possible.
E) It is estimated that possibly 400 species become extinct each day due to activities of humans.

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

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Which statement regarding the scientific method is false?


A) Inductive reasoning is used to form a hypothesis.
B) Observations are used to form a hypothesis.
C) Experiments need to be repeatable.
D) Original hypotheses are formed after an experiment.
E) The control and experimental group are identical except for one variable.

F) A) and D)
G) A) and E)

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The layer where organisms can exist on the surface of the earth is the


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

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

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Which of the following domains contains organisms that are adapted to life in harsh environments?


A) domain Archaea
B) domain Bacteria
C) domain Eukarya
D) domain Animalia
E) domain Plantae

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

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The body temperature in humans is maintained around 37 °\degree C.Which characteristic of life does this information represent?


A) Living things acquire materials and energy from the environment.
B) Living things are homeostatic.
C) Living things are adapted.
D) Living things grow and develop.
E) Living things respond to stimuli.

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

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B

As the human population size increases,


A) ecosystems remain unaffected.
B) fewer fossil fuels are burned and carbon dioxide levels remain constant.
C) it becomes evident that preserving the biosphere has no benefit to humans.
D) fewer ecosystems are destroyed,resulting in an abundance of biodiversity.
E) biodiversity is adversely affected as humans have destructive effects on ecosystems.

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

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Which statement regarding the scientific method is false?


A) Hypotheses are tentative explanations of observed phenomena.
B) A hypothesis may become a theory,which may become a law.
C) Deductive reasoning is often used in the design of an experiment.
D) A control group is always exposed to the factor being tested.
E) Conclusions are formed after an experiment is conducted.

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

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If the human population faces potential extinction,cloning of humans is the only technology that will save us.

A) True
B) False

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A physician specializes in surgery involving the following group of organs: mouth,esophagus,stomach,and intestines.Overall,what is the highest level of organization that this physician is specialized in?


A) cell
B) tissue
C) organ
D) organ system
E) organism

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

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Organs are composed of tissues,which are composed of cells.This is an example of which characteristic of life?


A) Living things grow and develop.
B) Living things respond to stimuli.
C) Living things maintain themselves by homeostasis.
D) Living things have levels of hierarchical organization.
E) Living things are adapted to the environment.

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

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Which classification category includes the most species?


A) family
B) genus
C) class
D) phylum
E) kingdom

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

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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) A) and D)
G) A) and E)

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The three major domains of life are


A) plants,animals,and protists.
B) bacteria,fungi,and eukaryotes.
C) eukaryotes,prokaryotes,and animals.
D) archaea,bacteria,and eukaryotes.
E) eukaryotes,prokaryotes,and fungi.

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

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