Which of the Following Statements Are Fundamental to the Clonal

question 12

Multiple Choice

Which of the following statements are fundamental to the clonal selection theory of how the adaptive immune system functions?
I.Each lymphocyte has a unique membrane receptor that recognizes one antigen.
II.When the lymphocyte binds an antigen, it is activated and begins dividing to form many identical copies of itself.
III.Cloned lymphocytes have slight differences and are selected by the spleen for removal if they do not bind an antigen.
IV.Cloned cells descend from an activated lymphocyte and persist even after the pathogen is eliminated.

• A) only I and III
• B) only II and IV
• C) only I, II, and IV
• D) only II, III, and IV

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Definitions:

Long-Run Growth Rate

The sustainable rate at which a company or an economy can grow its output over a long period without increasing inflation.

Required Rate of Return

The minimum return an investor expects to achieve for the risk associated with a particular investment.

Expected Dividend

The dividend payout anticipated by shareholders based on the issuing company’s past distributions and future earnings projections.

Expected Capital Gains Yield

The anticipated return from an increase in the price of an investment, not including dividends or interest.