How are the processes of the citric acid cycle and the electron-transport chain interrelated? One complete citric acid cycle produces four reduced coenzymes, which enter the electron transfer chain and ultimately generate ATP. One complete citric acid cycle produces two reduced coenzymes, which enter the electron transfer chain and ultimately generate ADP. One complete citric acid cycle produces two reduced coenzymes, which enter the electron transfer chain and ultimately generate ATP. One complete citric acid cycle produces four reduced coenzymes, which enter the electron transfer chain and ultimately generate ADP