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Why do we need the electron transport chain (select all that apply)? Why do we n

ID: 161509 • Letter: W

Question

Why do we need the electron transport chain (select all that apply)?

Why do we need the electron transport chain (select all that apply)? It frees NAD + and FAD, to be reused in the TCA and the electron transport chain. Because a great deal of energy is stored in NADH and FADH_2, which are formed in glycolysis and citric acid cycle Cytochrome c is a cofactor of various enzymes for both glycolysis and citric acid cycle (e.g., phosphoglycerate kinase and isocitrate dehydrogenase). Technically we don't need the electron transport chain; glycolysis and TCA creates all the ATP that we need. Electron transport chain's purpose is to squeeze every last bit of ATP we can synthesize with a minor net gain. The proton gradient created through the electron transport chain can be used to turn the ATP synthase, which in turn can synthesize ATP.

Explanation / Answer

Correct answers would be :

Explanation: NADH2 and FADH2 after entering the ETC ,donate electrons and converted to NAD+ and FAD that can be again used in TCA and ETC.The electron from NADH2 and FADH2 when pass through mitochondrial membrane results in set up of a gradient of H+ which leads to production of ATP with the help of ATP synthase.

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