Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
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Chapter 9.3, Problem 1R
Summary Introduction
To review:
The transport of protons to the intermembrane space from the mitochondrial matrix during the ETC (electron transport chain).
Introduction:
The ETC is a part of the oxidative phosphorylation where the oxidation of the electron carriers takes place, which comes from the glycolysis and citric acid cycle (CAC). This reaction occurs in the presence of oxygen, which serve as the electron acceptor and further oxidizes the electron carriers.
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Chapter 9 Solutions
Life: The Science of Biology
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- How does the presence of cristae in the mitochondrial membrane increase the productivity of aerobic respiration in eukaryocytes?arrow_forwardWhich complexes of the electron transport system are able to catalyze the synthesis of ATP from ADP to Pi?arrow_forwardWhat compounds are the immediate source of the "high energy electrons" that enter the electron transport system of mitochondria? Where do these electron-donating compounds gain their electrons? What type of compounds are these electron-donating compounds?arrow_forward
- How does mitochondrial structure contribute to aerobic metabolism, particularly to the integration of the citric acid cycle and electron transport?arrow_forwardWhat happens to the proton gradient across the mitochondrial inner membrane if electron flow through the ETC stops?arrow_forwardHow many H+ do the first two proton pumps of the electron transport system transport?arrow_forward
- Could the inner mitochondrial membrane carry out its functions in the coupling of electron transport and ATP synthesis if its lipid bilayer were readily permeable to hydrogen ions (protons)?arrow_forwardDescribe the processes that are driven by mitochondrial electron transport.arrow_forwardWhat is the minimum voltage drop for individual electrontransfer events in the mitochondrial electron transport systems that is necessary for ATP synthesis?arrow_forward
- If electron flow through the ETC stops, what happens to the proton gradient across the mitochondrial inner membrane and How does the effect that cyanide has on the proton gradient (above) in turn affect ATP synthesis?arrow_forwardWhat would be the effect on ATP production of decreasing the pH inside the mitochondrial matrix? Explainarrow_forwardWhat are the principal sources of electrons for the electron transport pathway?arrow_forward
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