An Organism That Requires Atmospheric Oxygen Levels for Growth Is

Question

An organism that requires atmospheric oxygen levels for growth is
A) aerobic.
B) microaerophilic.
C) aerotolerant.
D) anaerobic.
E) facultative.

Accepted Answer

An aerobic organism requires atmospheric oxygen levels for growth. Microaerophilic organisms require lower levels of oxygen, aerotolerant organisms can tolerate oxygen but do not require it, anaerobic organisms grow in the absence of oxygen, and facultative organisms can grow with or without oxygen.