Solved

Use the Following Information When Answering the Corresponding Questions)

question 21

Multiple Choice

Use the following information when answering the corresponding questions) .
It has been shown that there are two distinct variants of the HIV virus Bleul et al. 1997. The HIV coreceptors CXCR4 and CCR differentially regulated on human T- lymphocytes. Proceedings of the National Academy of Science 94:1925- 30) . One virus preferentially infects macrophages and is called M- tropic. The other preferentially infects T cells and is called T- tropic. The M- tropic viruses use CCR5 and CD4 as coreceptors, and the T- tropic viruses use CXCR4 and CD4 as coreceptors. The
M- tropic viruses are found early in HIV infections; the T- tropic viruses are found late in infections, when AIDS symptoms are prevalent. T- tropic viruses are associated with a drastic decrease in T cells. Macrophages go to the site of wounds, where they are used to fight infections. T cells circulate in the body and fight infections at many sites.
-What would the result be if a drug that blocks the action of RNA polymerase was introduced into a virus- infected organism?

Definitions:

Sensitivity Training

A form of training designed to help individuals develop empathy and improve interpersonal communication through better understanding of others' feelings and perspectives.

Psychoanalysis

A therapeutic approach and theory of personality developed by Sigmund Freud emphasizing unconscious motivations and conflicts.

Contingency Management

A type of behavioral therapy in which certain behaviors are reinforced by rewards or sometimes punishment to modify behavior.

Behavior Therapy

A type of psychotherapy focused on changing negative or unhealthy behaviors using learning principles and conditioning techniques.