Normal microbiota can be found on various parts of our bodies, including the skin, eyes, nose, mouth, and genital tract. They help protect us from disease by competing with harmful bacteria for resources and forming a barrier to colonization by these pathogens. While some members of the normal microbiota can cause disease under certain circumstances, they generally do not cause harm to their host.

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Normal Microbiota

Question 24

Multiple Choice

Normal microbiota

A) are only found in the digestive tract.
B) protect us from disease by crowding out "bad" invading bacteria.
C) are only found on small select parts of our bodies.
D) always cause disease when growing on our bodies.
E) play no role in our general health.

Correct Answer: