All of the Following Are True About Diphtheria Toxin, Except

question 19

Multiple Choice

All of the following are true about diphtheria toxin, except

• A)it inhibits cellular protein synthesis.
• B)it must be neutralized with antitoxin.
• C)it primarily targets the heart and nerves.
• D)it is an exotoxin.
• E)antitoxin (DAT) comes from immunized human plasma donors.

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Definitions:

Predictive Validity

The degree to which a measurement or test score forecasts future results on a connected outcome.

Concurrent Validity

A measure of how well a particular test predicts outcomes based on comparison with other measures that are administered at the same time.

Face Validity

The extent to which a test appears to measure what it is supposed to measure, based on an informal and subjective evaluation.

Content Validity

The extent to which a test measures all aspects of the concept it intends to assess.