Combination therapy for HIV is based on the assumption that it highly unlikely for multiple simultaneous mutations to cause resistance to each of the drugs used.
Answer the following statement true (T) or false (F)
True
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Echinoderms _____
A) have an exoskeleton of hard calcareous plates B) often use tube feet to move around in their environment C) digest their food outside of the organism D) circulate hemolymph in their water vascular system E) are most often found in freshwater environments
Why is anal sex more apt to transfer HIV than vaginal sex? What will be an ideal response?
A mutualism in which each species can live without the other is termed
A. an obligate mutualism. B. a facultative mutualism. C. a dispersive mutualism. D. a trophic mutualism. E. a defensive mutualism.
How is the splicing of U2-dependent introns different from that of U12-dependent introns?
a. U12-dependent introns have no branch site. b. U2-dependent introns have longer consensus sequences at the splice sites. c. Most of the snRNPs in the spliceosomes are different. d. The SR proteins in the spliceosomes are different. e. U12-dependent introns are self-splicing.