How Are Memory B Cells Able to Persist for Many

question 36

Multiple Choice

How are memory B cells able to persist for many years?

• A) Memory B cells are continuously stimulated by cytokines released from helper T cells.
• B) Memory B cells undergo hypermutation, which allows them to survive indefinitely.
• C) Memory B cells use gene rearrangement to prevent apoptosis from occurring.
• D) Memory B cells with receptors that match with antigen produce anti-apoptosis protein.

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Definitions:

ROE

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Plowback Ratio

A measure indicating the proportion of earnings retained by a company for reinvestment, rather than being paid out as dividends.

Present Value

The current value of a future sum of money or stream of cash flows given a specified rate of return, often used in the time value of money calculations.

Growth Opportunities

Potential situations or initiatives that could lead to business expansion, including new markets, products, or services.