By the end of the Krebs cycle, every carbon originally in glucose is converted into carbon dioxide.

Question

Quizplus · Accepted Answer

During the Krebs cycle, the two acetyl-CoA molecules (each containing 2 carbons) derived from a single glucose molecule (containing 6 carbons) are completely oxidized to carbon dioxide. The other four carbons are released as CO2 during the conversion of pyruvate to acetyl-CoA (before the Krebs cycle) and during the Krebs cycle itself.

By the End of the Krebs Cycle, Every Carbon Originally