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A scientific theory is:


A) a suggested explanation that accounts for observations.
B) a way to organize how we think about a problem.
C) a concept that is supported by experimental evidence that explains the facts in an area of study.
D) a way to understand a complex system by reducing it to its working parts.

E) C) and D)
F) A) and B)

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  McGraw-Hill Education -The species that have had proportionally the most time to diverge are: A) R and D B) F and Z C) A and Z D) F and R E) F McGraw-Hill Education -The species that have had proportionally the most time to diverge are:


A) R and D
B) F and Z
C) A and Z
D) F and R
E) F

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

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Why is it necessary to take an interdisciplinary approach to studying biology?


A) Interdisciplinary approaches are required to answer all scientific questions since all disciplines borrow knowledge from each.
B) Research methods used to solve many biological questions often require a number of different types of approaches and the expertise of a variety of scientists.
C) An interdisciplinary approach is the only way we can further our biological knowledge.

D) A) and B)
E) A) and C)

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Multiple independent experiments have demonstrated that phytochrome helps trigger seasonal change responses in the plant such as changing color and loosening of leaves.Plants have the ability adapt to seasonal changes in their surroundings.This statement is an example of:


A) deductive reasoning
B) an experiment
C) a hypothesis
D) inductive reasoning
E) a theory

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

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Ginkgo trees are known to lose their leaves at a certain time each year throughout the United States.Based on this information,Ginkgo trees in China must behave the same way.These statements are an example of:


A) deductive reasoning
B) an experiment
C) inductive reasoning
D) a theory

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

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Why was the determination of the actual sequence of the human genome considered to be descriptive science?


A) It involved hypothesis-driven research.
B) It did not involve hypothesis-driven research.
C) It involved inductive reasoning.
D) It did not involve deductive reasoning.

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

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Based in the information provided,the best explanation for the low numbers of spiders and flies in plot 5 is:


A) centipedes are actively consuming flies and spiders.
B) there were not enough flies to support a large centipede population.
C) centipedes prefer spiders to flies.
D) there were not enough spiders to catch and consume all the flies.

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

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If two different species of fish fossils were found in two different layers of sedimentary rock,what might one infer about the specimens?


A) They died at the same time
B) The two species are unrelated
C) The species in the higher layer evolved from the species in the lower layer
D) The species in lower layer died first
E) The species in the higher layer died first

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

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The term that Darwin used to describe the concept that those with superior physical,behavior or other attributes are more likely to survive than those that are not so well endowed,and thus are more likely to pass their traits to the next generation,is called:


A) biological diversity
B) geometric progression
C) natural selection
D) superior beings
E) survival of modifications

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

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The proposal that one type of organism can change gradually into another type over a long period of time is known as:


A) evolution.
B) natural history.
C) preconception.
D) preservation.

E) B) and C)
F) A) and D)

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The plots that were staked out on the island were part of the:


A) applied research.
B) basic research.
C) constructed model.
D) experimental design.

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

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Which statement represents the biological characteristics that kittens,oak trees,swans,earth worms,elephants and crickets have in common?


A) DNA nucleotides form the basis of all inherited life,with cells that are formed from other cells.
B) DNA nucleotides form the basis of inherited life,with cells that are formed spontaneously from the environment.
C) RNA nucleotides form the basis of all inherited life,with cells that are formed from other cells.
D) RNA nucleotides form the basis of inherited life,with cells that are formed spontaneously from the environment.

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

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Recent discoveries of microscopic fossils have extended the known history of life to about:


A) 3.5 billion years ago.
B) 2 billion years ago.
C) 4.5 billion years ago.
D) 1 billion years ago.

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

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How does peer review influence the development of scientific theories?


A) Peer review allows other scientists to know what is current in their field.
B) Careful evaluation of research results by other scientists ensures that only solid and legitimate research results are published,and helps prevent faulty research or false claims from being viewed as scientific fact.
C) Peer review increases competition among scientists and thus increases the quality of the published work.
D) Peer review makes it extremely difficult for work to be published other than earth-shattering scientific theories.

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

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Dr.Ratard was trying to determine the cause of a mysterious epidemic affecting fish in the gulf of New Mexico.His proposal that the deaths were caused by an organism called a protist is considered a(n) ________


A) experiment.
B) hypothesis.
C) conclusion.
D) theory.
E) data set.

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

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A key contribution to Darwin's thinking was the concept of limits put on the geometric growth of populations by nature,originally proposed by:


A) Charles Lyell.
B) Thomas Malthus.
C) Karl Popper.
D) Peter Raven.
E) Russel Wallace.

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

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Based on hierarchical levels of biological organization,which of these choices represents the broadest level?


A) Endocrine system
B) 3 toed sloths
C) School of piranhas
D) Amazon Basin
E) Jaguars,giant anteaters,macaws,capybaras

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

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While you are riding the ski lift up to the top of the mountain on a very cold day you start to shiver involuntarily.You know that the shivering is your body′s attempt to help regulate your body temperature and is an example of what type of mechanism?


A) energy utilization
B) sensitivity
C) homeostasis
D) evolutionary adaptation

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

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Experiments are carried out to test a hypothesis by changing one variable at a time and including an unchanged variable termed a(n) ________.


A) experimental variable
B) altered variable
C) control
D) stable variable

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

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What common life characteristic would cells from a daisy,bacteria,and a dog all have?


A) DNA
B) cell walls
C) organs
D) ability to conduct photosynthesis

E) A) and B)
F) C) and D)

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