The Electron Transport System

The electron transport system is a series of proteins imbedded on the cristae of mitochondria. The NADH and FADH₂ produced in glycolysis and the Krebs Cycle enter the electron transport system. There, the electrons from NADH pass through three proteins and pump a total of 6 protons across the cristae. The electrons from FADH₂ pass through two proteins and pump a total of 4 protons across the membrane. Then, every two protons diffuse back through an ATP-synthase and produce one ATP. A total of 34 ATP are produced this way.