AP BIOLOGY

Detailed explanation-1: -Some organisms are able to continually convert energy without the presence of oxygen. They undergo glycolysis, followed by the anaerobic process of fermentation to make ATP.

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 happens in anaerobic conditions (i.e., without oxygen). Fermentation begins with glycolysis which breaks down glucose into two pyruvate molecules and produces two ATP (net) and two NADH. Fermentation allows glucose to be continuously broken down to make ATP due to the recycling of NADH to NAD+.

Detailed explanation-4: -Fermentation is a process in which sugars are used to generate energy for living cells. Besides, this energy is obtained without the need of O2, since it uses an anaerobic pathway. Thus, it represents an alternative way to obtain energy! Fermenting microorganisms and their by-products define the fermentation type.

Detailed explanation-5: -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.