Following glycolysis and the citric acid cycle, but before the electron transport chain and oxidative phosphorylation, the carbon skeleton of glucose has been broken down to CO2 with some net gain of ATP. Most of the energy from the original glucose molecule at that point in the process, however, is in the form of ________.
A) acetyl CoA
B) glucose
C) pyruvate
D) NADH

Question

Quizplus · Accepted Answer

During glycolysis and the citric acid cycle, glucose is broken down into pyruvate and then into acetyl CoA which is used to produce NADH. Therefore, most of the energy from glucose at this point is in the form of NADH.

Following Glycolysis and the Citric Acid Cycle, but Before the Electron