Question

2 $NADH\left(H^{+}\right)$ produced during anaerobic glycolysis yield

• A. 6 ATP molecules
• B. 64 ATP molecules
• C. 8 ATP molecules
• D. None of these

Answer 1

The correct option is D None of these

Anaerobic respiration or fermentation is a metabolic process that converts sugar to acids and gases, or alcohol.
This process occurs when the electron transport chain is unavailable due to lack of a final electron receptor.
As the electron transport chain is inactive, $NADH\left(H^{+}\right)$ cannot donate their electron to the ETC to generate ATP.
Instead, the $NADH\left(H^{+}\right)$ are used in the oxidation of pyruvate formed during anaerobic glycolysis into either lactic acid or ethanol and carbon dioxide.
Therefore, as $NADH\left(H^{+}\right)$ is not not involved in generation ATP during anaerobic respiration, the correct option is none of the above.