Question

In the conversion of pyruvic acid to acetyl coenzyme A, pyruvic acid is:

• A. Oxidized
• B. Reduced
• C. Isomerised
• D. Inactivated

Answer 1

The correct option is A Oxidized

In Krebs cycle pyruvate enters mitochondria through a transport protein, here oxidative decarboxylation ( oxidation as well as removal of carbon dioxide ) occurs to produce co${}_2$ which later combines with sulfur which has coenzyme A to form acetyl CoA.

So, the correct option is ' oxidized'.