The source of the atmospheric oxygen necessary for the development of oxidative metabolism is thought to have been
a. glycolysis.
b. the big bang.
c. the breakdown of ATP.
d. photosynthesis.
Ans: d. photosynthesis.
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After being bitten by an infected tick, transfer of the rickettsial organism occurs
A. immediately. B. within 5 minutes. C. within 20 minutes. D. within 4-10 hours
One of the main functions of the hypothalamus is to produce ____ hormones, which affect the ____ pituitary
a. releasing; posterior b. releasing; anterior c. activating; posterior d. amplification; anterior e. growth factor; anterior
Animals with a menstrual cycle do NOT
a. have an estrous cycle. b. develop endometriosis. c. display periods of sexual interest. d. produce estrogen. e. undergo menopause.
When electrons flow through the electron transport system from NADH to oxygen, what is the sequence of molecules through which they move?
A) complex I, cytochrome c, complex III, coenzyme Q, complex IV, O2 B) complex I, coenzyme Q, complex III, complex IV, O2 C) complex I, coenzyme Q, complex IV, cytochrome c, O2 D) complex I, coenzyme Q, complex III, cytochrome c, complex IV, O2 E) complex II, coenzyme Q, complex III, complex IV, O2