The prions believed to cause transmissible spongiform encephalopathies (TSEs)
a. normally perform important functions in their host animal, and only cause problems if they are transmitted to another species.
b. differ from normal versions of proteins due to their increased length
c. show different forms in different species.
d. show identical forms in all species.
c
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Lakisha suffered the loss of her boyfriend in a motorcycle accident four months ago. Which of the following is consistent with her experiencing traumatic distress?
a. She has upsetting memories of her boyfriend b. She feels the physical presence of her deceased boyfriend with her. c. She has been very isolated since the death. d. She is so preoccupied with her loss that it interferes with her life.
Although testosterone and related anabolic steroids clearly increase muscle mass during puberty, it has been more difficult to determine scientifically whether adult men with normal testosterone can get much stronger from extra steroids, partly because
A. pure steroids have not been available for medical research. B. no drug company will fund the research. C. it would be unethical to expose research participants to the high doses of multiple steroids reportedly used by athletes. D. the FDA doesn't want to find out that they might really work.
All of the following brain structures are intimately involved in addictive behavior, EXCEPT the:
A) orbitofrontal cortex. B) ventral tegmental area. C) hippocampus. D) hypothalamus.
Several days after celebrating 90 days of “clean time,” Melissa begins using opiates again. Melissa’s experience BEST illustrates ______.
a. a binge b. withdrawal c. tolerance d. a relapse