What is the function of the enzyme acetylcholinesterase?
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.
d
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Why does only one sperm enter the ova?
A. A chemical is released to prevent others from entering. B. More than one sperm enter the ova but do not fertilize the egg. C. The ova only has room for one sperm. D. The chemical used to attract sperm ceases once one sperm enters the ova.
Stimuli effective in the stimulus control of behavior often influence
a. whether a response will occur initially. b. the frequency a response will occur over long periods of time. c. the intensity of a response when it does occur. d. when and where a response will occur.
The two main divisions of the nervous system are the ________ and ________
a) brain; spinal cord b) autonomic; somatic nervous systems c) peripheral nervous system; central nervous system d) glands; muscles
Your aunt is an outstanding attorney who has been very successful in the courtroom. She has been very frustrated in not being made a partner in a law firm who has only men as partners. Her frustration is described by what concept?
a. male superiority b. fear of failure c. the glass ceiling d. burnout