Which of the following statements regarding herpes simplex virus is false?
a. Because sensory neurons express low levels of MHC class I molecules, they provide appropriate sites for viral dormancy.
b. Reactivation of herpesviruses follows stressful incidents.
c. Cold sores develop as a consequence of CD8 T-cell killing.
d. In one's lifetime, periodic episodes of reactivation are common.
e. Herpes simplex virus infects B lymphocytes.
E
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Which is the best definition of a human papillomavirus (HPV) infection?
A) a common viral infection characterized by recurrent outbreaks of blister-like sores B) a sexually transmitted disease caused by a bacterium that usually affects mucous membranes C) a sexually transmitted disease caused by a virus and characterized by the appearance of warty growths D) a fatal, incurable sexually transmitted viral disease that causes a rash on the skin
Persons with difficult breathing often feel that they can breathe easier when:
a. they are lying down b. they are sitting up c. they are asleep d. the room is kept warm
Which of the following is NOT considered a safer sex practice?
A. using condoms B. restricting sexual activity to oral sex C. practicing abstinence D. having sex that does not involve genital contact or penetration
Vitamin water contains about as many calories as a soft drink.
Answer the following statement true (T) or false (F)