21. The Immune System
First-Line Defenses: Normal Microbiota
Multiple Choice
Multiple ChoiceNormal microbiota:
A
Are the organisms that typically reside on and in your body.
B
Protect against infection by pathogens.
C
Enhance infection by pathogens.
D
Play no role in affecting pathogen growth.
E
A and B.
F
C and D.
40
views
1
rank
Related Videos
Related Practice
3:43
