Explore the roles of telomeres and the enzyme telomerase in the aging process. First define each term and then discuss its role in aging
What will be an ideal response?
Telomeres are the very ends of chromosomes in the cells. They are shorter in older
cells than in younger cells and become shorter still with each cell duplication. Once
the cell has reached its Hayflick limit of duplication, the telomere is gone, the cell
ceases to duplicate, and the creature dies. In contrast, telomerase increases the
length of telomeres; adding the enzyme telomerase to an organism could slow the
aging process.
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Male sex hormones are called __________, and female sex hormones are called __________ .
A. estrogens; androgens. B. androgens; estrogens. C. estrogens; estrogens. D. androgens; androgens.
Together, Crystal and her therapist wrote a list of ten scenes involving Crystal's fear of heights. After teaching her a relaxation technique, Crystal's therapist told her to imagine herself in the least frightening of these scenes while she made herself feel relaxed. Crystal was undergoing __________.
A. exposure in vivo B. systematic desensitization C. modeling therapy D. rational emotive therapy
Maricella was born several days ago, and her pediatrician has observed that she has almond-shaped eyes and a fold over her eyelids. In addition, her head, neck, and nose are smaller than other babies of her birth weight. With which of the following conditions would Maricella most likely be diagnosed?
a. Down syndrome b. Turner's syndrome c. Kleinfelter's syndrome d. Phenylketonuria
Individuals from collectivistic cultures are more likely than those from individualistic cultures to
a. have an independent orientation. b. conform to a public norm. c. disobey an authority. d. possess greater heterogeneity.