If Our Bodies Are Capable of Secondary Responses, How Do

question 76

Multiple Choice

If our bodies are capable of secondary responses, how do people contract influenza more than once?

• A) Memory cells lose their ability to recognize antigens after six months.
• B) The affinity of antibodies diminishes in the secondary response.
• C) New varieties of flu virus continuously evolve.
• D) Our bodies cannot launch a strong enough immune response against the flu virus.
• E) There are no effective vaccinations for the flu.

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Definitions:

Intelligence

The ability to learn, understand, and apply knowledge, solve problems, and adapt to new situations.

Schizophrenia

A mental disorder characterized by abnormal behavior, disorganized speech, and a decreased ability to understand reality.

Virus

A microscopic infectious agent that replicates only inside the living cells of an organism and can cause a variety of diseases.

Dependent Variable

The variable in an experiment that is expected to change in response to manipulations of the independent variable, used to assess the effect of the treatment.