The HIV protease has been the target of several anti-HIV medications called protease inhibitors. This antiviral strategy is possible because protease inhibitors _____
A) cause protease to precipitate out of the cell by combining with certain salt solutions
B) cleave at specific places in viral polypeptides, resulting in the destruction of reverse transcriptase
C) prevent HIV from generating ATP in the host cell
D) prevent the formation of active viral proteins
Answer: D
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What might happen to your red blood cells if your blood solute concentration began to fall rapidly below normal?
A. Your blood cells would stay the same size. B. Your blood cells would shrivel because water would move out of the cells via osmosis. C. Your blood cells would enlarge and could rupture because water would move into the cells via osmosis. D. We do not have enough information to answer this question.
Given the DNA sequence 5?-TAC AAA ATA CAG CGG-3?, which of these sequences represents a nonsense mutation?
A) 5?-TAG AAA ATA CAG CGG-3? B) 5?-TAC AAA TAC AGC GGG-3? C) 5?-TAC AAG ATA CAG CGG-3? D) 5?-TAC AAA ATA CAC CGG-3? E) 5?-TAC AAA ATA CAG AGG-3?
Sulfonamide drugs initially disrupt which process?
A) protein synthesis B) folic acid synthesis C) transcriptions D) PABA synthesis
In order for a variable to be a valid instrumental variable it needs to satisfy which two conditions?
A. Efficient and uncorrelated B. Relevant and efficient C. Relevant and exogenous D. Exogenous and consistent