When combined with electron transport, one turn of the citric acid cycle produces ________ ATP.

Question

Quizplus · Accepted Answer

One turn of the citric acid cycle itself directly yields a small amount of ATP (or GTP, depending on the cell type), but it's the NADH and FADH2 produced during the cycle that are significant for ATP production when they are used in the electron transport chain. These molecules donate electrons to the electron transport chain, leading to the production of a larger amount of ATP. When considering the NADH and FADH2 produced in one turn of the citric acid cycle and their subsequent use in the electron transport chain, the total ATP yield is often approximated to be about 10 ATP per turn of the cycle. This includes the direct production of ATP (or GTP) in the cycle, plus the ATP produced from NADH and FADH2 in the electron transport chain.

When Combined with Electron Transport, One Turn of the Citric