What is the problem which fermentation is able to FIX? Cell has a limited supply of NAD

Cell has a limited supply of oxygen

Cell has too few mitochondria

Cell has too many glucose

Explanation:

Cellular respiration occurs in the cytoplasm, where glucose is broken down for energy processing. Energy is produced by aerobic respiration in the presence of oxygen, whereas anaerobic respiration can be carried out in an oxygen-deprived environment.

Fermentation is one kind of anaerobic respiration- here, the cells use glucose to generate a Net 2 molecules of ATP from the 6carbon sugar. Glucose is first converted to pyruvate, which is oxidized in a complex process. While 4 ATP are produced in fermentation, 2ATP are used in regenerating NAD+ from NADH2.

Two types of fermentation include lactic acid fermentation and alcoholic fermentation. These occur in single-celled, and multicellular microbes.

where in your body is there an enzyme that does function at a high or low ph? what is the name of that enzyme and its function?