Normal microbiota provide protection from infection in each of the following ways EXCEPT
A)they produce antibacterial chemicals.
B)they compete with pathogens for nutrients.
C)they make the chemical environment unsuitable for nonresident bacteria.
D)they produce lysozyme.
E)they change the pH of the environment.

Question

Quizplus · Accepted Answer

Normal microbiota do not produce lysozyme. Lysozyme is an enzyme that breaks down bacterial cell walls and is produced by a variety of cells including white blood cells, tears, and breast milk. The other choices are all ways in which normal microbiota provide protection from infection.

Normal Microbiota Provide Protection from Infection in Each of the Following