Changes in the NMDA receptor in Aplysia are believed to be the cause of
A. short-term sensitization.
B. long-term sensitization.
C. short-term habituation.
D. long-term habituation.
Answer: D
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According to the empathy-altruism hypothesis, ____
a. all altruistic behavior is motivated by empathy b. empathy motivates people to reduce others' distress c. people who routinely engage in altruistic behavior gradually become less and less empathetic to others d. people who routinely engage in altruistic behavior gradually become more and more empathetic to others
Dale seemed to be okay when he returned from military dutyAfghanistan in June, 2010, despite witnessing his two best friends being killed when invading a compound. Six months after his return, he begins having nightmares and flashbacks about his experiences and lives on constant alert. He jumps at even the slightest noise. Finally, his wife insists that Dale see a therapist. The most likely
diagnosis is ____. a. noise phobia c. posttraumatic stress disorder b. panic disorder d. acute stress disorder
Which of the following lends support to the immunological theory of aging?
A. Antibody production declines with age. B. White blood cell numbers rise with age. C. Phagocytosis becomes less effective with age. D. Autoimmunity becomes more prevalent with age.
Some of your friends are taking diet pills. These pills are likely to be
a. amphetamines. c. opiates. b. methylphenidate. d. barbiturates.