What is the function of the enzyme acetylcholinesteras e?
a. It synthesizes acetylcholine from the diet.
b. It increases the sensitivity of the postsynaptic cell to acetylcholine.
c. It blocks further release of the transmitter acetylcholine.
d. It breaks acetylcholine down into components for recycling.
Question 2
Estradiol normally found in the bloodstream of a female rat fetus neither masculinizes nor feminizes its development because it is ____.
a. chemically converted to testosterone
b. bound to alpha-fetoprotein
c. dissolved in the fat supplies of the fetus
d. not effective on cells even if it did enter them
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