Which Feature Permits Mucus to Be Characterized as a Chemical

question 13

Multiple Choice

Which feature permits mucus to be characterized as a chemical barrier against infection?

• A) it contains lysozyme that breaks down peptidoglycan
• B) it contains lactoferrin that releases free iron so that bacteria can use it
• C) it contains IgE antibodies
• D) it is salt and solute free

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Definitions:

Area

In mathematics, the extent of a two-dimensional surface within a boundary, measured in square units.

Probability Density

A function that describes the relative likelihood for a continuous random variable to occur at a specific point.

Normally Distributed

A statistical distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean.

Standard Normal

A normal distribution with a mean of zero and a standard deviation of one, serving as the basis for z-score calculations in statistics.