Biology
Biology
12th Edition
ISBN: 9781260494570
Author: Raven, Peter
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 7, Problem 5A
Summary Introduction

Introduction:

The electron transport chain is the final stage of aerobic respiration. It is also known as oxidative phosphorylation that means the phosphorylation of the ADP molecule occurs in the presence of oxygen to release energy.

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Which of the following statements concerning ATP synthesis is NOT true? a. The open conformation of the ATP synthase is for releasing ATP. b.   The gamma subunit in the stalk responds to the flow of H+ and rotates the assembly counterclockwise and thus change the conformations of the active site to synthesize ATP.   c.   The tight conformation of the ATP synthase is for converting ADP and phosphate to ATP.   d.   The loose conformation of the ATP synthase is for binding ADP and phosphate.   e. Ten protons are required to catalyze the rotation of the subunits so that one ATP is synthesized. Clear my choice
Which of the following statements about the generation of ATP in the electron transport chain is correct? a. The generation of ATP from ADP coupled to electron transfer occurs by substrate level phosphorylation as in glycolysis.   b. ATP synthase generation of ATP involves a rotating structure inside the inner mitochondrial membrane.   c. ATP synthase generation of ATP involves a rotating structure outside the inner mitochondrial membrane.   d. Electron transport generates a proton gradient across the outer mitochondrial membrane.
Which of the following statements is TRUE of the electron transport chain (ETC)? A. The movement of electrons down the ETC drives the formation of a proton (H+) gradient. B. The movement of H+ ions through ATP synthase drives the transfer of electrons down the ETC. C. The movement of electrons down the ETC drives the movement of ADP and phosphate through ATP synthase. D. The movement of H+ ions across the inner membrane of the mitochondria drives the transfer of electrons down the ETC.
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The Cell Membrane; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=AsffT7XIXbA;License: Standard youtube license