Question

unlike aerobic respiration, anaerobic fermentation may occur under which of the following conditions?
when no oxygen is available
when no glucose is available
when no pyruvate is available
when no adp is available

Explanation:

Aerobic respiration requires oxygen, while anaerobic fermentation occurs in the absence of oxygen. Glucose is needed for both processes as a starting - point for energy production. Pyruvate is an intermediate product in both. ADP is involved in energy transfer in both. So the key difference is the presence or absence of oxygen.

Answer:

When no oxygen is available