ATP Synthesis

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Condraz23
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ATP Synthesis

Post by Condraz23 » Sun Sep 17, 2006 12:46 pm

Plants perform light-dependent reactions within the thylakoids of chloroplasts. Electrons are "excited" by light energy and sent down an electron transport chain where they release energy and produce ATP. This all happens while water is photolyzed into hydrogen and oxygen atoms.

Now, how does the electron transport chain "synthesize" ATP?
Last edited by Condraz23 on Mon Jun 04, 2007 11:49 am, edited 1 time in total.

Ultrashogun
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Post by Ultrashogun » Sun Sep 17, 2006 1:02 pm

In the ETC electrons coming from the oxidation of sugars and fats release energy by traveling down it. This energy does not go directly towards ADP + P --> ATP but it creates a gradient of protons through the mitochondrias inner membrane.

That means that there will be more protons on the outside than on the inside, which causes them to tend to "try to equalize the gradient by passing to the other side". The only "hole" in the membrane which allows them to pass through is a F0F1 complex, which harnesses the energy of a passing proton to synthesize ATP.

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