cellular respiration 2
نص القصة المصورة
- 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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