Early in the infection with HIV, most virions bind to the host cell using CCR5 as a coreceptor. As the infection progresses, the HIV population evolves to use an alternate coreceptor. What is the alternate coreceptor these X4 viruses utilize?
A) Tetherin
B) CCR5?
C) vpu
D) TRIM5?
E) CXCR4
E
Biology & Microbiology
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Enterococcal resistance to ampicillin predicts resistance to:
a. vancomycin. b. aminoglycosides. c. cephalosporins. d. linezolid.
Biology & Microbiology
Which of the following is considered a key human made contributor to global warming?
a. carbon dioxide b. hydrochlorofluorocarbons c. nitrous oxide d. ethane e. surface ozone
Biology & Microbiology
Plants that live year after year are
A. biannuals. B. woody. C. perennials. D. annuals.
Biology & Microbiology
After DNA replication is complete, each strand of the original molecule is bound to a new complementary strand. This process is known as
A. dispersive replication. B. disruptive replication. C. conservative replication. D. stabilizing replication. E. semiconservative replication.
Biology & Microbiology