The evolution of which class of molecules played an important role in the development of multicellular organisms?
a. G proteins
b. protein kinases
c. second messengers
d. ligand-gated ion channels
e. steroid hormones
ANSWER: b
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Extinction rates on islands are predicted, based on island biogeography, to be lowest
A. on small islands. B. on large islands. C. near islands. D. far islands.
Why does someone who has consumed a lot of
alcohol become dehydrated?
a. Alcohol inhibits ADH secretion, which leads to an increase in urination. b. Alcohol increases ADH secretion, which leads to an increase in urination. c. Alcohol inhibits ADH secretion, which leads to a reduction in urination. d. Alcohol increases ADH secretion, which leads to a reduction in urination. e. Alcohol does none of these
Which of the following are signs (not symptoms) of inflammation?
a. lymphodenitis b. granulomas c. abscesses d. soreness e. pain f. edema
For your first meeting with your physician, you should ________
A) make an extensive web search about your symptoms and bring printouts to your meeting B) always go alone because confidential information is being discussed C) bring prescribed medications only; your vitamins or over-the-counter pills do not matter D) prepare a list of medical questions and concerns