Monozygotic twins tend to be ________ concordant than dizygotic twins in IQ, certain personality patterns, and cholesterol levels.
A. more
B. less
C. There is no difference.
D. Research is inconclusive.
Answer: A
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The American Academy of Pediatrics recommends that adolescents get 60 minutes of exercise per
a. day. b. three-day period. c. week. d. month.
Amyloid is to ____ as tau is to ____
a. plaques; tangles b. tangles; plaques c. neurons; glia d. glia; neurons
Although estimates vary, infants are born with between 100 and 200 ___________ neurons
a. thousand c. billion b. million d. hundred
Errol was adopted from a Romanian orphanage nine years ago. He was physically and emotionally deprived until a couple adopted him at age 2½. It is most likely that Errol _________________
a. had more cognitive impairment than he would have had if he had been adopted before 6 months of age b. will have greater brain plasticity than his counterparts who were not raised in impoverished conditions c. will show no signs of cognitive impairment because of overproduction of neurons d. stayed overweight for most of his life once he was no longer deprived of food