how does the etc produce atp?
<answer> ATP contains three phosphates, this sounds like a likely place to be producing ATP. <context> Electron Transport Chain and Oxidative Phosphorylation--Finally, phosporylation. Since ATP contains three phosphates, this sounds like a likely place to be producing ATP. NADH and FADH2 provide electrons (from the hydrogen atoms) to the electron transport chain which uses them to produce ATP.