EVERYDAY SCIENCE

Detailed explanation-1: -Anaerobic bacteria are germs that can survive and grow where there is no oxygen. For example, it can thrive in human tissue that is injured and does not have oxygen-rich blood flowing to it. Infections like tetanus and gangrene are caused by anaerobic bacteria.

Detailed explanation-2: -The bacteria which grow in the absence of oxygen are called anaerobic bacteria.

Detailed explanation-3: -Anaerobes are microorganisms that don’t require oxygen in order to survive or proliferate. Instead of oxygen, anaerobic organisms use electron acceptors such as nitrate or sulfate and other inorganic acceptors that have a lower reduction potential than oxygen, thus resulting in less efficient respiration.

Detailed explanation-4: -Obligate anaerobes cannot tolerate oxygen because they utilize metabolic schemes built around enzymes that react with oxidants. The reliance upon low-potential flavoproteins for anaerobic respiration probably causes substantial superoxide and hydrogen peroxide to be produced when anaerobes are exposed to air.

Detailed explanation-5: -Facultative anaerobes are bacteria that can grow in both the presence or absence of oxygen. In addition to oxygen concentration, the oxygen reduction potential of the growth medium influences bacterial growth.