Chuck has been treated for HIV for more than 20 years, and although he sometimes struggles with side effects, he is doing pretty well. Because of the development of resistance, his doctors are changing some of his medications and suggest raltegravir, an integrase inhibitor. How does this drug act?
A) It blocks entry of HIV into cells, which may keep the virus from reproducing.
B) It slows the advancement of HIV infection by blocking the enzyme needed for viral replication.
C) It inhibits an enzyme responsible for viral replication early in the viral life cycle.
D) It blocks a co-receptor required for HIV entry into human cells.
B
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Diastolic blood pressure refers to
A. the greatest pressure during the heart's contraction. B. the lower pressure during the heart's relaxation phase. C. the rhythm of the heart. D. the heart rate during exercise.
Having blood in the stool is ________
A) flatus B) eructation C) hematochezia D) hematemesis
A common example of a cofounder for exercise epidemiologists would be all of the following except
a. age c. baseline health status b. body composition d. red blood cell count
All veins except the pulmonary veins carry ____________________ blood.
Fill in the blank(s) with the appropriate word(s).