Helper T Cell Numbers Are Lowered in Individuals with AIDS

question 45

Multiple Choice

Helper T cell numbers are lowered in individuals with AIDS.Which of the following are functions of these helper T cells that may contribute to the symptoms from AIDS?

• A) activation of B cells to make antibodies
• B) activation of cytotoxic T lymphocytes
• C) activation of neutrophils
• D) increased bone marrow production of lymphocytes
• E) A and B only

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Definitions:

Regressive Tax

A tax that takes a larger percentage from low-income earners than from high-income earners, considered regressive because it affects those who are less able to pay.

Proportional Tax

A tax system where the tax rate is fixed and the same for all income levels.

Progressive Tax

A taxation system where the tax rate increases as the taxable amount or income of the individual or entity increases.

Benefits-Received Principle

A taxation theory stating that individuals should pay taxes in proportion to the benefits they receive from government services.