In HIV infection,
a. the viral RNA forms a plasmid that stays silent in the host cell until reactivated
b. the viral positive strand RNA is reverse transcribed to negative strand RNA and is integrated into the host genome
c. the single-stranded RNA from the virus is reverse transcribed to DNA and is integrated into the host genome
d. dsRNA from the virus is transcribed to DNA and is integrated into the host genome
e. the double-stranded RNA from the virus is transcribed to DNA and forms a plasmid until the cell is reactivated
C
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How do natural killer cells kill their targets?
A. By lysing them B. By inducing inflammation C. By inducing apoptosis D. By causing them to leave the bloodstream and be trapped by the liver E. By coating them with opsonins
What problems might someone from another country face in trying to follow MyPyramid?
What will be an ideal response?
Which of the following is NOT a benefit of safety belt use?
A. prevention of being thrown from the car B. prevention of the "second collision" C. spreading of collision force over the entire body D. increase in the confidence of the driver
Which of the following is true regarding the physical activity pyramid?
A. Moderate activity is at the base because it is the base of an active lifestyle. B. Vigorous aerobic exercise is higher than moderate activity since it is more important. C. Sedentary activity is put at the top since it should be minimized. D. Flexibility is at a lower level than muscular fitness since it is less important for health.