Which Statement Provides the Best Explanation of the Need for Self-

question 11

Multiple Choice

Which statement provides the best explanation of the need for self- tolerance screening of lymphocytes?

• A) Lymphocytes which would attack the body's own tissues are never generated.
• B) The process which generates the vast array of diverse antigen receptors is a random process that could produce receptors which will bind to the body's own tissues.
• C) Self- tolerance involves "self" lymphocytes which bind to and form a protective layer over all body tissues.
• D) It is necessary to have some lymphocytes with receptors that are self- tolerant to respond to intracellular infections by viruses.
• E) The process which generates the vast array of diverse antigen receptors is a highly- controlled process, so the generation of receptors which can bind to the body's own tissues is a rare occurrence due to a genetic mutation.

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Definitions:

Current Ratio

A financial metric that evaluates a firm's capability to settle short-term liabilities using its available assets.

Profitability

Profitability measures a company's ability to generate earnings as compared to its expenses and other costs incurred during a specific period.

Return on Common Shareholders' Equity Ratio

A measure of profitability that calculates how much profit a company generates with the money shareholders have invested, focusing on common shareholders.

Marketability

The ease with which a product can be sold or a security can be bought or sold in the market without affecting its price.