Which One of the Following Statements About Humoral Immune Responses

question 2

Multiple Choice

Which one of the following statements about humoral immune responses is true?

• A) Naive B cells are required for initiation of primary responses and memory B cells are required for initiation of secondary responses.
• B) Antibody responses to bacterial polysaccharide antigens require CD4+ helper T cells.
• C) Heavy chain isotype switching typically occurs in response to bacterial polysaccharide antigens.
• D) Affinity maturation does not require helper T cells.
• E) Antibody-secreting cells generated during a humoral immune response live for only a few hours.

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Definitions:

Compounded Annually

Describes the method by which the interest earned on an investment is calculated and added to the principal balance once per year, leading to an increase in the amount of future interest.

Compound Interest

Interest calculated on the initial principal and also on the accumulated interest of previous periods of a deposit or loan.

Semiannual Interest

Interest that is paid or calculated twice a year, often used in bond payments.

Compounded Annually

This term describes interest on an investment that is calculated once a year, where the interest added also earns interest in subsequent years.