The energy of the electrons passing along the electron transport chain is used to make what

The electron chain is a series of complexes that transfer electrons from electron donors to electron acceptors. Think of it as a game of hot potato...electrons are passed like this along the chain. This electron transport is coupled to the movement of protons (H+) across the membrane. As more and more H+ is moved across the membrane, this creates a proton gradient (higher H+ on the outside of the membrane) that drives the synthesis of ATP (adenosine triphosphate). So...this was the long winded answer to your question: ATP. It is a very important concept in biology.

Iam not sure but to me it with be a or dsorry if i was late! hope this ! : )if you really want me to find out the answer that is correct tell me and i will do more research but the a or d makes sense to me.