The concentration of HIV in semen is __________ in men who have both gonorrhea and HIV, compared to men who have only HIV
A) significantly lower
B) up to 10 times higher
C) difficult to measure
D) about the same
B) up to 10 times higher
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When potassium channels in the hair cell open, potassium will _________ the cell, producing _________
a. enter; depolarization b. enter; hyperpolarization c. leave; depolarization d. leave; hyperpolarization
Mary went to the emergency room for the second time in a month complaining of difficulty in breathing and chest pain that had come on suddenly. She thought she was having a heart attack and was afraid she was dying, but the doctor could not find anything wrong. She may be suffering from ________
a. panic disorder. b. a somatoform disorder. c. PTSD. d. hypochondria.
Sixteen-year-old Edward is sexually active, but doesn't practice safe sex. He thinks becoming infected with AIDS is something that would happen to other people, but not to him. Which of the following concepts best explains Edward's belief?
a. hypothetical reasoning c. the imaginary audience b. the personal fable d. the illusion of invulnerability
Marijuana is considered a ______
a. depressant c. hallucinogen b. deliriant d. major tranquilizer