Complete question:
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.
Answer:
D) They produce lysozyme
Explanation:
The normal microbiota are microorganisms generally found in humans, they are mainly found in healthy people. The normal microbiota stay in the deep layers and surface of the skin, in saliva and conjuctivia. They are not harmful to the human body but sometimes infections use them as host.
Lysozyme is an enzyme found in tears or saliva secretions. The lysozyme helps play a key part in preventing bacterial infections.
The normal microbiota may protect in many ways but it doesn't provide protection by producing lysozyme.
Hello. You forgot your question options. The options are:
"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."
Answer:
D) they produce lysozyme.
Explanation:
Microbiota is the term used to refer to the set of microorganisms that inhabit the human body and that establish a partnership with the human organism. This set is formed by thousands of organisms and this partnership is not always beneficial, since even parasites can be found. An example of a microbiota is the intestinal flora, which is composed of millions of bacteria that exercise a beneficial partnership with our body.
The microbiota has the ability to produce antibacterial chemicals, prevent pathogens from absorbing nutrients, allow the existence of an inappropriate chemical environment for bacteria that can harm us and can modify the pH of the environment. However, it does not have the ability to produce lysozyme.
