Question

When a molecule of pyruvic acid is subjected to anaerobic oxidation and forms lactic acid, these are:

• A. Loss of $3$ ATP molecules
• B. Loss of $6$ ATP molecules
• C. Gain of $2$ ATP molecules
• D. Gain of $4$ ATP molecules

Answer 1

The correct option is A Loss of $3$ ATP molecules

When a molecules of pyruvic acid is subjected to anaerobic oxidation and forms lactic acid, these are loss of 3 ATP molecules. This happens due to NADH oxidation to NAD+.

So, the correct option is 'Loss of 3 ATP molecules' .