In cellular respiration, a series of molecules forming an electron transport chain alternately accepts and then donates electrons. what is the advantage of such an electron transport chain?

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13-10-2016
Biology

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In cellular respiration, a series of molecules forming an electron transport chain alternately accepts and then donates electrons. what is the advantage of such an electron transport chain?

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Аноним Аноним · Answer 1 · 2016-10-26T17:30:24+02:00

The advantage of an electron transport chain is that a small amount of energy is released with the transfer of an electron between each pair of intermediates. An electron transport chain (ETC) is a series of compounds that transfer electrons from electron donors to electron acceptors via redox (both reduction and oxidation occurring simultaneously) reactions, and couples this electron transfer with the transfer of protons (H+ ions) across a membrane.

luisvaschetto luisvaschetto · Answer 2 · 2021-10-28T13:12:56+02:00

The advantage of an electron transport chain is that a small amount of energy is released by the transfer of an electron between each pair of intermediates.

Cellular respiration has three stages: glycolysis, the Krebs cycle and oxidative phosphorylation.

During oxidative phosphorylation, the transport of electrons through a series of intermediates is used to create an electrochemical proton gradient across the inner mitochondrial membrane.

As the electrons move in the transport chain, a small amount of energy is released, which is coupled to the active transport of protons into the mitochondrial inner-membrane space.

Subsequently, this proton gradient is then used to synthesize ATP by an ATP synthase.

In conclusion, the advantage of an electron transport chain is that a small amount of energy is released by the transfer of an electron between each pair of intermediates.

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