At the present time, the most effective drugs capable of reducing the symptoms of schizophrenia act as antagonists or inverse agonists at which types of receptors?

In sex-reassignment surgery, :

a. Genitals of the opposite sex are constructed and hormones are taken. b. Genital transplants are inserted from donors. c. Hormones are taken, but genitals are left in tact. d. Secondary features (likes Adam's apples, chins, and noses) are altered, but genitals are left intact.

According to To Catch a Coldabout stress and the immune system, the rates of infection from exposure

are significantly (a) higher for participants in the high groups for Stress Index, Perceived Stress and Negative Affect (b) lower for participants in the high groups for Stress Index, Perceived Stress and Negative Affect (c) higher for participants in the high group for Perceived Stress only (d) higher for participants in the high group for Stress Index only