The "clinically asymptomatic stage" of HIV lasts for an average of ____
a. ten days c. ten months
b. ten weeks d. ten years
ANS: D
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Once pregnancy has been established, a temporary organ called ______ develops on the uterine wall to serve as a transfer station for nourishment and oxygen from mother to the fetus, and for waste products from the fetus to mother
a. umbilical cord b. blastula c. afterbirth d. placenta
Weekly injections of ____ were found to reduce the production of sperm
a. testosterone c. LH hormone b. estrogen d. progesterone
Which of the following is a major reason why chlamydia goes undiagnosed and untreated, especially among women?
A. the asymptomatic nature of the infection in a majority of cases B. a lack of knowledge regarding the infection C. the good recovery rate in response to home remedies D. the high costs of medical treatment
Researchers have found that on the island of Mangaia
A. older men instruct young girls in sexual matters. B. older women and men instruct young boys in sexual matters. C. female orgasm is thought to be nonexistent or deviant. D. after their mid-forties, men and women abstain from sex.