The drug physostigmine improves the performance of the neurotransmitter acetylcholine. Therefore physostigmine would be classified as a(n)
a) agonist.
b) antagonist.
c) neuromodulator.
d) opioid peptide.
ANS: a
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Which of the following does NOT belong with the other three?
a. omega b. beta c. alpha d. delta
In a recent study, researchers found that when subjects dreamt about a plane crash, their anxiety
A. was higher than just thinking about a plane crash B. was lower than just thinking about a plane crash C. randomly increased and decreased with no clear pattern D. was repressed
Data on school achievement indicates that, on average, African American and Hispanic students tend to
a) receive high grades until high school. b) perform at lower levels and receive lower grades. c) receive higher grades despite performing at lower levels. d) perform at higher levels and receive higher grades.
Constricted blood vessels, accelerated heart rate, restricted blood flow to visceral organs: these symptoms
jointly reflect A) atherosclerosis. B) myocardial infarction. C) migraine headache. D) hypertension.