Question

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

Explanation:

In cellular respiration, if oxygen is available, pyruvate enters the mitochondria and is further oxidized in the citric - acid cycle. In the absence of oxygen, pyruvate undergoes fermentation. Glucose is the starting molecule for glycolysis which produces pyruvate, ATP is an energy - carrier molecule produced during cellular processes, and hydrogen is involved in redox reactions but is not the determining factor for pyruvate's fate like oxygen is.

Answer:

D. Oxygen