Last Summer a Bee Stung You for the First Time

question 27

Multiple Choice

Last summer a bee stung you for the first time. You developed only a small area of redness and swelling at the site. However, if you are stung again and have a severe reaction that occurs more rapidly, you know that this is due to the activation of

• A) complement.
• B) helper T cells.
• C) tissue macrophages.
• D) cytotoxic T cells.
• E) memory cells.

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Definitions:

Obverse

In logic, a method for transforming a proposition by negating both the predicate and the subject, and replacing the predicate with its complement.

Propositions

Declarations or claims that convey a belief or viewpoint, capable of being either correct or incorrect.

Converse

In logic, a statement formed by exchanging the hypothesis and conclusion of a given conditional statement.

Proposition

A statement that expresses a concept that can be true or false.