NEET BIOLOGY

Detailed explanation-1: -Fermentation does not require oxygen and is therefore anaerobic. Fermentation will replenish NAD+ from the NADH + H+ produced in glycolysis. One type of fermentation is alcohol fermentation. First, pyruvate is decarboxylated (CO2 leaves) to form acetaldehyde.

Detailed explanation-2: -Respiration in the absence of oxygen is called anaerobic respiration. It is also termed fermentation. In this process, glucose is partially broken down anaerobically which produces two ATP.

Detailed explanation-3: -Fermentation is another anaerobic (non-oxygen-requiring) pathway for breaking down glucose, one that’s performed by many types of organisms and cells. In fermentation, the only energy extraction pathway is glycolysis, with one or two extra reactions tacked on at the end.

Detailed explanation-4: -In the absence of oxygen, the primary purpose of fermentation is to regenerate NAD+ from NADH to allow glycolysis to continue. Glycolysis requires NAD+ to accept electrons from the oxidation of carbohydrates like glucose.