Why do adults become more susceptible to disease as they age?
A) Fewer antibodies are produced and T cells become less efficient.
B) More B cells and T cells are produced than can be absorbed by the bone marrow and the thymus gland.
C) The thymus gland and the bone marrow produce antibodies that attack normal body cells.
D) The thymus gland becomes excessively large and interferes with the production of B cells.
A
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Although it is certainly an unusual source of data for researchers, some have looked at Playboy centerfolds and Miss America Beauty pageant contestants. How is this research relevant to eating disorders?
a. The emphasis on thinness is a relatively recent phenomenon in the last 20 years. b. These women's facial features indicated they had dieted beyond the point of medical safety. c. Between 1959 and 1988, their ratio of weight to height for these groups declined dramatically. d. In their interviews, almost all of these women gave subtle clues suggesting they were in deep conflict concerning weight control.
After reading a story to her class about a caterpillar changing into a butterfly, Heather, a kindergarten teacher, summarizes the main points of the story. Then, one student, DJ, raises his hand and says "I had pancakes for breakfast this morning
" DJ's behavior is an example of ___. a. abstract thinking b. mental imagery c. centration d. none of the above