Which Statement Is True

question 19

Multiple Choice

Which statement is true?

• A) Nonself substances are major histocompatibility proteins that have been altered by T cells.
• B) Prostaglandins are a type of cytokine involved in dilating blood vessels during inflammation.
• C) Interferons help defend against viral pathogens by binding to the virus and causing it to lyse.
• D) Major histocompatibility complex II proteins occur on the surfaces of a broader range of cell types than major histocompatibility complex I proteins.
• E) Major histocompatibility complex proteins are used in identifying self from nonself substances.

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Definitions:

Operant Conditioning

A method of learning that occurs through rewards and punishments for behavior, encouraging the association between actions and consequences.

Behavior

The actions or reactions of an object or organism, usually in relation to the environment or surroundings.

Loud Music

Sound that has a high volume level, often to the point where it can cause temporary or permanent hearing damage.

Discrimination

Discriminatory behavior or action against various groups of individuals, particularly based on racial, age, or gender differences.