How many carbon atoms are fed into the citric acid cycle as a result of the oxidation of one molecule of pyruvate?
A) two
B) four
C) six
D) eight
E) ten

Question

Quizplus · Accepted Answer

One molecule of pyruvate, which is a three-carbon molecule, is converted into one molecule of acetyl-CoA (a two-carbon molecule) before entering the citric acid cycle. The third carbon is released as CO2 during the conversion process.

How Many Carbon Atoms Are Fed into the Citric Acid