Question

What are the three types of bacteria that can grow in the absence of oxygen?

1) Aerobic bacteria
2) Anaerobic bacteria
3) Facultative anaerobic bacteria
4) Obligate anaerobic bacteria

Answer 1

Facultative anaerobic bacteria, obligate anaerobic bacteria, and aerotolerant anaerobic bacteria are the three types of bacteria that can grow in the absence of oxygen.

Step-by-step explanation:

The three types of bacteria that can grow in the absence of oxygen are:

1. Facultative anaerobic bacteria: These bacteria can survive and grow in both the presence and absence of oxygen. They can switch between aerobic respiration (using oxygen) and fermentation (without oxygen) to produce energy.
2. Obligate anaerobic bacteria: These bacteria cannot survive in the presence of oxygen and can only grow in the absence of oxygen. They rely on fermentation or anaerobic respiration for energy production.
3. Aerotolerant anaerobic bacteria: These bacteria can tolerate the presence of oxygen, but they do not use oxygen for their energy production. They usually have a fermentative metabolism.