The Krebs cycle starts and ends with the fourcarbon molecule

The Krebs cycle starts and ends with the four-carbon molecule:

Question 13 options:

A:citrate.

B:pyruvate.

C:ethanol.

D:lactate.

E:oxaloacetate.

Solution

Answer : The correct answer is E ( oxaloacetate)

The first reaction of the cycle is the condensation of acetyl-CoA with oxaloacetate to form citrate, catalyzed by citrate synthase.