In addition to getting an average of 60 minutes of vigorous exercise per day, the American Academy of Pediatrics recommends that adolescents who have completed puberty __________ three times per week.
A. lift the heaviest weights they can manage
B. alternate between running sprints and jogging
C. engage in muscle-strengthening exercises
D. engage in muscle- stretching exercises
Answer: C
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How is having a genetic predisposition to a disease related to contracting that disease?
A. A predisposition toward a disease means that the person will contract the disease. B. Having a predisposition to a disease is unrelated to contracting that disease. C. A predisposition makes a disease more likely, but it does not guarantee that the disease will be contracted. D. Identifying a predisposition means that effective treatments can begin early, and the disease can be thoroughly avoided.
Which statement best explains why males can grow breasts under certain hormonal conditions?
a. Sex-linked genes become activated b. The Y chromosome becomes activated. c. Sex-limited genes become activated. d. Breast growth is linked to color vision deficiency.
The consistency of an observation from one time to another is referred to as ____ reliability
a. inter-rater b. test-retest c. parallel-forms d. internal consistency
Among college students, fewer than one-fourth have ever tried
A. alcohol. B. cigarettes. C. marijuana. D. hallucinogens.