2 in glycolysis. 2 in the citric acid cycle. Oxidative phosphorylation (most ATP is produced here). The energy in NADH2 and FADH2 is converted into ATP. involves. electron transport. and. chemiosmosis. and. requires an adequate supply of oxygen.
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We have seen that the electron-transport chain generates a large proton gradient across the inner mitochondrial membrane. But recall that the ultimate goal of oxidative phosphorylation is to generate ATP to supply readily-available free energy for the body.
http://www.chemistry.wustl.edu/~edudev/LabTutorials/Cytochromes/cytochromes.html
The process that accounts for the high ATP yield is known as oxidative phosphorylation. A quick examination of Equations 5-7 shows that glycolysis and the citric-acid cycle generate other products besides ATP and GTP, namely NADH and FADH2 (blue).
http://www.chemistry.wustl.edu/~edudev/LabTutorials/Cytochromes/cytochromes.html
6.9 The citric acid cycle. During the citric acid cycle. the two-carbon group of acetyl CoA is added to a four-carbon compound, forming citrate, citrate is degraded back to the four-carbon compound, two CO 2 are released, and. 1 ATP, 3 NADH, and 1 FADH 2 are produced.
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the two-carbon compound remaining is oxidized while a molecule of. NAD. +. is reduced to NADH. , coenzyme A joins with the two-carbon group to form acetyl coenzyme A, abbreviated as. acetyl CoA. , and. acetyl CoA enters the citric acid cycle. .
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CHEM464 / Medh, J.D.Oxidative Phosphorylation10 ATP synthase (also called complex V) • The electrochemical potential energy generated by the proton and pH gradients across the mitochondrial inner membrane is called as Proton Motive Force and is used to drive ATP synthesis.
http://www.csun.edu/~jm77307/Oxidative%20Phosphorylation.pdf
These redox molecules are used in an oxidative-phosphorylation process to produce the majority of the ATP that the body uses. This oxidative-phosphorylation process consists of two steps: the oxidation of NADH (or FADH 2) and the phosphorylation reaction which regenerates ATP.
http://www.chemistry.wustl.edu/~edudev/LabTutorials/Cytochromes/cytochromes.html
6.8 Pyruvate is oxidized prior to the citric acid cycle. This process will not proceed without oxygen. The pyruvate formed in glycolysis is transported from the cytoplasm into a mitochondrion where. the citric acid cycle and. oxidative phosphorylation will occur.
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Thus, the dephosphorylation reaction of ATP to ADP and inorganic phosphate (Equation 3) is often coupled with nonspontaneous reactions (e.g. , Equation 2) to drive them forward. The body's use of ATP as a free-energy currency is a very effective strategy to cause vital nonspontaneous reactions to occur.
http://www.chemistry.wustl.edu/~edudev/LabTutorials/Cytochromes/cytochromes.html
Oxidative phosphorylation occurs in the mitochondria, and the two reactions (oxidation of NADH or FADH 2 and phosphorylation to generate ATP) are coupled by a proton gradient across the inner membrane of the mitochondria (Figure 9).
http://www.chemistry.wustl.edu/~edudev/LabTutorials/Cytochromes/cytochromes.html
what cycles do oxidative phosphorylation
Citric-acid cycle is in oxidative phosphorylation. Citric acid cycle do oxidative phosphorylation.