From what part of aerobic respiration do most of the carbon dioxide molecules we exhale come?
A) glycolysis
B) Krebs Cycle
C) electron transfer
D) phosphorylation
E) more than one of these

Question

Quizplus · Accepted Answer

The Krebs Cycle is where most of the carbon dioxide molecules are produced in aerobic respiration. During this stage, acetyl CoA is broken down and carbon dioxide is released along with the production of ATP. Glycolysis only produces a small amount of carbon dioxide, while electron transfer and phosphorylation do not produce any carbon dioxide. Therefore, the correct answer is B - Krebs Cycle.

From What Part of Aerobic Respiration Do Most of the Carbon