Compare aerobic respiration and fermentation in terms of the amount of ATP that can be generated from a single glucose molecule.

Aerobic respiration and fermentation can generate quite different numbers of molecules of ATP from a single glucose molecule. Cells that rely on fermentation to generate ATP using only glycolysis generate 2 ATP per molecule of glucose. Conversely aerobic respiration uses an electron transport chain and produces approximately 36–38 ATP per molecule of glucose.