Which Statement About the Cellular Immune Response Is True

question 9

Multiple Choice

Which statement about the cellular immune response is true?

• A) During the activation phase, cytotoxic T cells recognize and bind to antigen-class II MHC complexes.
• B) Cytotoxic T cells release interleukin-1 when bound to an antigen-presenting macrophage.
• C) Class I MHC proteins display antigenic fragments on virus-infected cells during both the activation and effector phases.
• D) Binding by a T cell to the CD4 receptor on the target cell initiates programmed cell death during the effector phase.
• E) Perforin is a cytokine that stimulates proliferation of cytotoxic T cells in the effector phase.

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Definitions:

Total Output

The aggregate quantity of goods or services produced in an economy or by a company during a specific period.

Fixed Costs

Costs that remain constant regardless of the amount of goods produced or units sold, including expenses like rent, wages, and insurance premiums.

Short Run

A period in economic analysis where at least one factor of production is fixed, limiting adjustments to changes in demand or supply.