1. Glycolysis produces ATP by __________ phosphorylation of ATP unlike __________ phosphorylation that is driven by the proton motive force. 2. At the end of glycolysis, other than pyruvate and ATP, the __________ molecule contains most of the free energy that will be used later to make more ATP. 3-5. The electrons carried by FADH2 pump fewer __________ into the intermembrane space of the __________ because they transfer their electrons to the __________ membrane protein of the transport chain.
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Glycolysis produces ATP through substrate-level phosphorylation, which is different from oxidative phosphorylation driven by the proton motive force. Show more…
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During oxidative phosphorylation of cell respiration, H+ ions move through the membrane pumping electrons from one side of the membrane to the other. ATP is synthesized when H+ ions move through a protein channel provided by ATP synthase. ATP pushes electrons through membrane carriers creating a H+ ion gradient. a concentration gradient is generated when large numbers of H+ ions passively diffuse from the matrix of the mitochondrion to the mitochondrion's intermembrane space. a phosphate is transferred from an organic molecule to ADP.
Adi S.
Glycolysis only produces a (net) 2 ATP per glucose molecule. This doesn't seem like a lot of energy per glucose molecule, so why is glycolysis used by almost every living organism? a) Glycolysis and gluconeogenesis are continuously "feeding" each other via the Cori Cycle. So, a lot of ATP can be produced without the need for other pathways. B) Because this occurs in the mitochondria, which have a lot of folds (cristae), there are a LOT of glycolytic enzymes working simultaneously - which produces a lot of ATP. c) The pathway relies on oxygen, which is very abundant in our atmosphere and used by many organisms. D) The pathway is incredibly fast, so ATP is produced very quickly.
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