Question

multiple choice question
the fate of pyruvate in a cell depends on whether what is available?

hydrogen
oxygen
glucose
atp

Explanation:

In cellular respiration, the fate of pyruvate (whether it enters aerobic respiration or fermentation) depends on the availability of oxygen. If oxygen is present, pyruvate enters the citric acid cycle and electron transport chain (aerobic respiration). If oxygen is absent, pyruvate undergoes fermentation. Hydrogen, glucose, and ATP are not the key factor determining pyruvate's fate in this context.

Answer:

B. Oxygen