HIV can evade host antibodies by
A) remaining an inactive provirus.
B) causing cell-to-cell fusion.
C) remaining an inactive provirus, causing cell to cell fusion, and virions remaining latent in vacuoles.
D) lowering the CD4+ cell count.
E) virions remaining latent in vacuoles.
C
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Organisms develop a normal morphology because cells can receive and interpret
A. extracellular positional information. B. intracellular positional information. C. both extracellular and intracellular positional information. D. signals from other developing organisms. E. all of the signals described in the choices.
Low-growing, hardy plants of the ____________________occur at high latitudes, where there is a layer of
____________________. Fill in the blank(s) with the appropriate word(s).
The rate at which mRNA is processed by
ribosomes is an example of a. transcriptional control. b. transcript processing control. c. transport control. d. translational control. e. post-translational control.
Aspirin reduces fevers; however, many physicians do NOT recommend aspirin to patients with a low-grade fever. Why not?
A) Fevers decrease the amount of interferon produced by the body. B) Aspirin increases the release of pyrogens. C) Aspirin increases the activity of phagocytic white blood cells. D) Fevers reduce bacterial reproduction rates.