Imaging studies suggest that pleasure that accompanies an orgasm in males and females may result from activation of the
A) medial preoptic area.
B) ventral tegmental area.
C) spinal cord.
D) lateral putamen.
E) ventromedial hypothalamus.
Answer: D
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Which of the following statements about the chromosomes of different species is true?
a. Different species of animals all have very different chromosomes. The relationship between species is not indicated by similarities in chromosomes. b. The more closely related the species, the more similar their chromosomes will be. c. The best way to determine the similarity between species is to study the number of chromosomes they have, not the different individual chromosomes. d. Because not every species of animals actually have chromosomes, determining their genetic similarity by studying chromosomes is not a useful practice.
Suppose that the local newspaper asks its readers to tear out a form from the paper, and indicate on it whether or not they are for or against allowing user fees to be imposed for medical services. Seventy-five percent of those who respond are against user fees. What can we conclude?
a. Most people in your city are opposed to user fees b. Most readers of the newspaper are opposed to user fees c. The results are not interpretable because the sampling process is unrepresentative d. The findings apply only to readers of that newspaper e. people who opposed user fees are newspaper readers
Christa, a rather demonstrative 7-year-old, hits her brother for laughing at her and feels guilty about it afterward. According to Freud, Christa's guilty feelings reflect the operation of the
A. ego. B. defense mechanism. C. superego. D. id.
When are infants at the highest risk for sudden infant death syndrome (SIDS)?
a) birth to 1 month of age b) 1–2 months of age c) 2–4 months of age d) 4–6 months of age