The butterfly-shaped center of the spinal cord (the gray matter) is made up of
a. dendrites.
b. neuronal cell bodies.
c. interneurons.
d. neuroglial cells.
e. all of these.
E
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Which of the following statements regarding prostatitis is incorrect?
A. It can be chronic or acute. B. It is caused by GI tract biota. C. The specific causative agent is readily cultured and identified. D. It is accompanied by pain and frequent, difficult urination.
Of the following, which event occurs first in
the light-dependent reactions of photosynthesis?
a. hydrolysis of water. b. synthesis of sugar. c. ejection of an electron from chlorophyll. d. manufacture of ATP. e. synthesis of NADPH
Kin selection is defined as:
a. selection for a behavior that raises an individual's own chances of survival or reproduction, as well as those of a related individual. b. selection for a behavior that lowers an individual's own chances of survival or reproduction, but raises those of a relative. c. selection for a behavior that lowers an individual's own chances of survival or reproduction, but raises those of another individual who may be reciprocally altruistic. d. selection that operates not just on one individual, but on all of its relatives as well. e. None of the above is correct.
Cancer cells ____.
A. have normal plasma membranes B. have an increased ability to attach to other cells C. divide slowly to produce low densities of cells D. show an amplified reliance on ATP formation by fermentation E. are all malignant