cellular respiration 2

3 steps. A decarboxylation reaction, dehydrogenation reaction, and finally the acetyl group reacts with the sulfur atom attached to you. 
Acetyl CoA
That's right. This is how I look once turned into acetyl CoA
Now we're in the mitochondrial matrix. We must be at stage 3, the Citric Acid Cycle.
Acetyl CoA
Yes, this is where myself and others like me are oxidized to CO2. Do you recall with what?
With the synthase of 1 ATP, 3 NADH and 1 FADH
Acetyl CoA
That's right! Now the CoA that carried me here can restart with a new acetyl group. 
Welcome to the inner membrane of the mitochondria! I am the electron, and this is the electron transport chain.
Electron
So this must be where potential energy is taken from NADH and FADH, and used for the synthesis of additional ATP.
Yes, then I am transferred from NADH and FADH to O2. Electrons like myself flow from one to another with the help of?
Electron
Mobile electron shuttles! Then you move down the ETC to create energy and water. But where does the water come from?
The water comes from the hydrogen protons. Next ATP synthase allows H+ to pass into the matrix, where 3 protons bind to the headpiece.
Electron
Then the headpiece rotates to catalyze the formation of ATP. How many ATP per glucose molecule is made in this stage?

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