Which of the Following Is True About the Role Normal

question 53

Multiple Choice

Which of the following is true about the role normal flora plays in maintaining host health?

• A) They provide a surface that is incompatible for attachment of an invader.
• B) They establish competition for nutrients and vitamins.
• C) They produce antimicrobial substances.
• D) They stimulate the immune system.
• E) All of the choices are true.

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Definitions:

Cross-Sectional Group

A research method that involves analyzing data from a population, or a representative subset, at a particular point in time.

Statistically Significant

A term denoting that the likelihood that a relationship between two or more variables is caused by something other than random chance is high enough to be considered notable.

Independent Variable

In research, an independent variable is the variable that is manipulated or controlled by the researcher to study its effect on a dependent variable.

Dependent Variable

In experimental and statistical research, the outcome variable that is measured to assess the effect of the independent variable.