US Karp, Cell and Molecular Biology, 8e, custom for old Dominion University Help

Question

US Karp, Cell and Molecular Biology, 8e, custom for old Dominion University Help I System Announcements signment Chapter 05, Testbank Question 26 How is the energy used to make ATP via the electron transport chain generated? The energy from electrons bound to reduced coenzymes is used to create a steep electrochemical gradient. Electrons bound to H are used to generate a H on gradient across the inner mitochondrial membrane. Electrons bound to FADH2 are used to generate a proton gradient across the inner mitochondrial membrane. Electrons bound to NADH are used to generate a proton gradient across the inner mitochondrial membrane. All of these are correct. Question Attempts: 0 Copyright o 2000-2017 by John Wiley & Sons, Inc. or related companies. All rights reserved.

Explanation / Answer

Above all options are correct: The reduced coenzymes i.e NADH & FADH2 are generated by Glycolysis and Krebs cycle and other catabolic pathways are rich sources of electrons. They possess high reduction potential than Electron Transport Chain (ETC) complexes. Due to this they passively transport the electron to oxygen through various ETC complexes. During this time, free energy released, that pump the protons from mitochondrial matrix to inner membrane space, where proton gradient formed. Then this proton (H+) gradient discipate into the matrix via ATP synthase and produce ATP

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