Which organ is central to the body's metabolism of nutrients?
A) the kidneys B) the stomach C) the liver D) the small intestine
Answer: C
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The central dogma of molecular biology states that information flows from:
A. DNA directly to proteins. B. protein to RNA to DNA. C. DNA to RNA to protein. D. RNA to protein to DNA. E. RNA to DNA to protein.
In __________ food chains, most energy flows from producers directly to detritivores and
decomposers. Fill in the blank(s) with the appropriate word(s).
In the respiration of terrestrial animals, “ventilation”
refers to a. the bulk movement of air in and out of the organism. b. the diffusion of gases across a membrane. c. the diffusion of gases in and out of blood cells. d. the transport of gases to and from body cells. e. all of these.
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Figure 39.10A, B, and C
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The following question refers to the figure above.
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The structures illustrated in the figure are found in the ____.
A. mouth B. esophagus C. stomach D. small intestine E. colon