Beneficial bacteria found in the body that create a barrier against pathogens are called

A. antigens.
B. normal flora.
C. immunity.
D. virulence.


B. normal flora.

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What is the primary reason that the door to a clean room should remain closed?

A) To prevent distractions B) To maintain a quiet atmosphere C) To prevent entry of unauthorized personnel D) To prevent airflow in or out of the room

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In order for a training program to truly be considered effective, it must change what element?

A) Learning B) Results C) Behavior D) Reaction

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Vaccinations protect healthcare workers by building immunity to certain infectious diseases

Indicate whether the statement is true or false.

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A nerve cell that conducts information is a/an:

a. neuron b. dendrite c. astrocyte d. axon

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