Exam%202%20spring%202008%20with%20answers

Exam%202%20spring%202008%20with%20answers - Name Psychology...

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Name ______________________________ page 1 Psychology 335 Second Exam March 25, 2008 1. What is the single most important predictor as to whether a human couple will have sexual intercourse? (3 points) Day of the week (Saturday night/Sunday morning) 2. a. What does immunocytochemistry (ICC) detect? (2 points) The presence of a particular protein in a tissue. b. What does in situ hybridization histochemistry ( in situ ) detect? (2 points) The presence of a particular messenger RNA (mRNA) in a tissue. 3. a. What is the gender identity of XX individuals with compensatory adrenal hypertrophy (CAH) (one word)? (2 points) female b. What is the gender identity of XY individuals with compensatory adrenal hypertrophy (CAH) (one word)? (2 points) male 4. What are the differences in circulating hormone levels in adult heterosexual women and lesbians? (2 points) none that we can detect 5. What are the differences in circulating hormone levels in adult heterosexual and gay men? (2 points) none that we can detect 6. What causes homosexuality? (2 points) we don’t know 7. List three lines of evidence supporting the hypothesis that the ventromedial hypothalamus plays an important role in the control of female copulatory behavior. (6 points) Lesions knock out the behavior Estradiol implants in VMH induce estrous behavior in ovariectomized animals Progesterone implants in VMH induce estrous behavior in ovariectomized, estradiol-primed animals VMH antiestrogen implants prevent induction of estrous behavior by exogenous E+P VMH antiprogestin implants prevent induction of estrous behavior by exogenous E+P VMH contains estrogen receptors and estradiol-induced progestin receptors
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Name ______________________________ page 2 8. What are the three steps you need to perform in order to detect an antigen in a slice of brain tissue using immunocytochemistry (ICC)? Draw a diagram as part of your answer. (4 points) a. Incubate tissue primary antibody that recognizes just the antigen (protein) that you want to detect. Rinse off unbound antibody. b. Incubate tissue with secondary antibody that recognizes the primary antibody and contains some sort of tag that will let you detect it under microscope. Rinse off unbound secondary antibody. c. Do what needs to be done to detect the tag on the secondary antibody. The tag can be radioactive or it can be some chemical that undergoes a chemical change when incubated in the right conditions. If everything is working right, the tag should be visible over just the cells containing the antigen of interest. 9. What are immediate-early genes (
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Exam%202%20spring%202008%20with%20answers - Name Psychology...

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