Question

What are facultative anaerobes?

Answer 1

Facultative anaerobes:

1. A facultative anaerobic organism produces ATP through aerobic respiration while oxygen is present but can switch to fermentation when oxygen is unavailable.
2. In the presence of oxygen, facultative anaerobes can shift their metabolic pathways, using the more efficient process of respiration in the presence of oxygen and the less efficient process of fermentation in the absence of oxygen.
3. The oxygen reduction potential of the growth medium, in addition to oxygen concentration, influences bacterial growth.
4. Yeast is an example.