Question

Which of the following accurately describes fermentation?

A. Fermentation generates more ATP than cellular respiration.
B. Fermentation always produces carbon dioxide.
C. Fermentation makes NAD+ needed to keep glycolysis going.
D. Fermentation can only occur in the presence of oxygen.

Answer 1

the right answer is C

Answer 2

The right answer is C

In the anaerobic mode, the reduction of pyruvate to lactate or ethanol (fermentations) ensures the reoxidation of NADH to NAD + consumed during the oxidation of glyceraldehyde 3-phosphate to 1,3-bisphosphoglycerate (reaction 6 of glycolysis). This regeneration of NAD + allows glycolysis to be maintained in the absence of oxygen.

In the aerobic mode, NAD + is regenerated by the respiratory chain.