Any Bio Geniuses?

During the electron transport chain in cellular respiration, what exactly does the energy that leaves during each step do? I know it has something to do with powering the turbine of the ATP synthase, but I'm not sure. Can someone explain?

January 10, 2011

6 Comments • Newest first


Photosynthesis exchange? o.O lol idk I suck at bio but I think that's it?

Reply January 12, 2011

I'm going to try to sum this down..
The electron transport chain is part of chemiosmosis (oxidative phosphorylation), and provides much of the ATP generated during cellular respiration. Protons are pumped from the matrix in the mitochondria to the outer compartment by the electron transport chain. A proton gradient is then created between the outer compartment and the inner matrix (too many protons passing out into the outer compartment, also known as the intermembrance, causes protons to flow back into the inner matrix, through [b]ATP synthase[/b].) Oxygen becomes the final hydrogen acceptor, combining half an oxygen molecule with 2 electrons and 2 protons, forming water. When the protons flow through the ATP synthase channels, they generate energy to phosphorylate ADP into ATP.

Reply January 12, 2011

Um the energy is used to power hydrogen pumps. the pumps pump out the h+ into the intermembrane space against the gradient. the h+ diffuse by using(and powering) the atp synthase to get back into the membrane. the atp synthase phosphorylates adp into atp.
thats how i remember it

Reply January 10, 2011 - edited

My god all of you people are too smart. Bio is my worst subject

Reply January 10, 2011 - edited

[quote=drpeppaman23]The energy that leaves during each step is given off as either heat or is used to reform the carbon atoms into different carbon structures. The energy is ultimately used for chemiosmosis.[/quote]

So the only thing it does is help the H+ ions back into the mitochondrial matrix through the ATP synthase? How does it help?

Reply January 10, 2011 - edited

I think its ATP correct me if I am wrong o-o

Reply January 10, 2011 - edited