Carbon monoxide is considered toxic because it acts on Complex IV. How would the addition of carbon monoxide to actively respiring mitochondria affect the relative oxidation-reduction states of all components of the electron-transport chain? Complexes I and I would be reduced, but complexes II and IV would be oxidized because the electrons come from FADH2 oxidation, not NADH. O All four complexes would remain oxidized because they function as a multisystem complex. O Complexes I, II, and I would be reduced and Complex IV would be oxidized. All four complexes would remain reduced because they function as a multisystem complex Complexes I, II, and ill would be oxidized but Complex IV would remain reduced.
Carbon monoxide is considered toxic because it acts on Complex IV. How would the addition of carbon monoxide to actively respiring mitochondria affect the relative oxidation-reduction states of all components of the electron-transport chain? Complexes I and I would be reduced, but complexes II and IV would be oxidized because the electrons come from FADH2 oxidation, not NADH. O All four complexes would remain oxidized because they function as a multisystem complex. O Complexes I, II, and I would be reduced and Complex IV would be oxidized. All four complexes would remain reduced because they function as a multisystem complex Complexes I, II, and ill would be oxidized but Complex IV would remain reduced.
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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
Transcribed Image Text:Carbon monoxide is considered toxic because it acts on Complex IV. How would the addition of carbon monoxide to actively
respiring mitochondria affect the relative oxidation-reduction states of all components of the electron-transport chain?
Complexes I and I would be reduced, but complexes II and IV would be oxidized because the electrons come from FADH2 oxidation, not
NADH.
O All four complexes would remain oxidized because they function as a multisystem complex.
O Complexes I, II, and I would be reduced and Complex IV would be oxidized.
All four complexes would remain reduced because they function as a multisystem complex
Complexes I, II, and ill would be oxidized but Complex IV would remain reduced.
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