Why Would a Person Who Has AIDS Be More Susceptible

question 51

Multiple Choice

Why would a person who has AIDS be more susceptible to the bacterium that causes tuberculosis?

• A) HIV (which causes AIDS) directly infects and destroys CD8⁺ T-cells. These are the cells that would actively destroy the bacterium that causes tuberculosis.
• B) HIV (which causes AIDS) directly inhibits the production of interferons. Interferons have a strong natural antibacterial activity, and are necessary for elimination of the bacterium that causes tuberculosis.
• C) HIV (which causes AIDS) destroys CD4⁺ helper T-cells. These are the cells that help activate and increase the bacteria-destroying capabilities of macrophages. Activated macrophages are required to help clear out the bacterium that causes tuberculosis, so without the CD4⁺ T-cells, we won't have activated macrophages.
• D) HIV (which causes AIDS) directly infects and destroys antibody-producing B-cells. Without the ability to produce antibodies, we can't opsonize and ingest/destroy the bacterium that causes tuberculosis.

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Definitions:

Predetermined Overhead Rate

The predetermined overhead rate is a rate used to allocate manufacturing overhead costs to products or job orders, based on estimated overhead costs and activity levels.

Variable Overhead Rate Variance

The difference between the actual variable overhead costs incurred and the standard cost allocated, indicating inefficiencies or cost control issues.

Favorable

A term used in accounting to describe a situation where actual costs are less than the budgeted or standard costs.

Unfavorable

A term used in variance analysis to describe a variance that leads to a decrease in profit compared to budgeted or standard costs.