Question

Pyruvic acid, before entering the Krebs cycle is changed into

• A. Acetyl Co-A
• B. Malic acid
• C. Succinic acid
• D. Citric acid

Answer 1

The correct option is A Acetyl Co-A

Pyruvic acid is the end product of glycolysis which gets converted to acetyl CoA, catalyzed by the enzyme pyruvate decarboxylase and coenzyme A. This acetyl CoA then enter into Krebs cycle.
Malic acid, succinic acid and citric acid are the intermediates of citric acid cycle, which are not the converted products of pyruvic acid.

Thus, the correct answer is option A.