Gonads are:

a) the main reproductive organs in humans.
b) human sex chromosomes.
c) primary and secondary sexual characteristics.
d) sex hormones.

ANS: A

Psychology

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In Freud's theory of personality, to defend itself against the demands of the id and the superego, the ego will institute

a. the pleasure principle. b. the reality principle. c. problem-focused coping devices. d. ego defense mechanisms.

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Amobarbital, pentobarbital, secobarbital, and tuinal are examples of

a. stimulants. b. hallucinogens. c. barbiturates. d. amphetamines.

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