24.11–24.12
24.11–Environmental contaminants can disrupt normal hormone functioning.
Chemicals in the environment can mimic or block hormones, with disastrous results.
Q
Which of the following is not associated with increased levels of estrogen resulting from hormone replacement therapy?
- a) increased risk of heart disease
- b) increased longevity
- c) increased risk of endometrial cancer
- d) increased risk of ovarian cancer
- e) increased levels of cell division
Blood samples from an individual who has fasted for 24 hours would have:
- a) high levels of insulin and low levels of glucagon.
- b) high levels of both insulin and glucagon.
- c) high levels of glucagon and standard levels of insulin.
- d) low levels of both insulin and glucagon.
- e) high levels of glucagon and low levels of insulin.
Many female bodybuilders take steroids (testosterone) to increase their muscle mass and achieve their desired body shape. The consequences can include all of the following except:
- a) increased competitiveness and aggressiveness.
- b) increased hair growth.
- c) decreased performance on tests of object memory.
- d) increased concentration.
- e) decreased fertility.
If a high dose of time-
- a) He would obtain a larger territory than males with lower levels of circulating testosterone.
- b) He would get into many fights with larger males.
- c) He would have a longer life span than most other males.
- d) He would enjoy increased reproductive success.
- e) He would develop a greater muscle mass than other males of similar body weight.
