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Electron Transport, NADPH Turnover, and Metabolism of Reactive
Electron Transport, NADPH Turnover, and Metabolism of Reactive

Student notes in ppt
Student notes in ppt

... to convert two acetyl CoA molecules into acetoacetate which is then reduced to form D--hydroxybutyrate. Acyl-CoA acetyltransferase (thiolase) is the same enzyme that releases one molecule of acetyl CoA in reaction 4 of the  oxidation pathway, however in this case, the reaction is driven toward con ...
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Cellular respiration
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... In the thylakoid membranes, pigment complexes absorb solar energy which excites electrons (e-). Energized e- pass through an electron transport chain (ETC) where they release energy for ATP production. ...
Cellular respiration
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... In the thylakoid membranes, pigment complexes absorb solar energy which excites electrons (e-). Energized e- pass through an electron transport chain (ETC) where they release energy for ATP production. ...
The Effect of Disulphides on Mitochondrial Oxidations
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AdvLec10_WebCT
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... B Increased liver glycolysis (This happens in Jane via stimulation of PFK by AMP) C Increased muscle glycolysis D Decreased PDH activity (would  entry of substrates to Citric Acid Cycle) ...
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Electron transport chain



An electron transport chain (ETC) is a series of compounds that transfer electrons from electron donors to electron acceptors via redox reactions, and couples this electron transfer with the transfer of protons (H+ ions) across a membrane. This creates an electrochemical proton gradient that drives ATP synthesis, or the generation of chemical energy in the form of adenosine triphosphate (ATP). The final acceptor of electrons in the electron transport chain is molecular oxygen.Electron transport chains are used for extracting energy via redox reactions from sunlight in photosynthesis or, such as in the case of the oxidation of sugars, cellular respiration. In eukaryotes, an important electron transport chain is found in the inner mitochondrial membrane where it serves as the site of oxidative phosphorylation through the use of ATP synthase. It is also found in the thylakoid membrane of the chloroplast in photosynthetic eukaryotes. In bacteria, the electron transport chain is located in their cell membrane.In chloroplasts, light drives the conversion of water to oxygen and NADP+ to NADPH with transfer of H+ ions across chloroplast membranes. In mitochondria, it is the conversion of oxygen to water, NADH to NAD+ and succinate to fumarate that are required to generate the proton gradient. Electron transport chains are major sites of premature electron leakage to oxygen, generating superoxide and potentially resulting in increased oxidative stress.
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