What is/are the function(s) of the Krebs Cycle?

Question

A. To ferment pyruvate to ethanol
B. To release the chemical energy stored in acetyl CoA
C. To produce starting materials needed for the synthesis of certain biological molecules
D. To provide a source of lactic acid for muscles
E. To store extra carbon atoms in the form of carbon dioxide (CO2)

Answer 1

The answers are B and C.

The pyruvate that is produced by glycolysis is converted to Acetyl-CoA. The Acetyl-CoA then reacts with the oxaloacetate which is produced in the cycle. The Krebs cycle produces 24 ATP.

While it produces energy, Krebs cycle also produces substrates like oxaloacetate, succinate, malate, alpha-ketoglutarate, etc., that could be needed to synthesize certain biological molecules.

Answer 2

All of A,B,C,D,and E.

Answer 3

B-