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Shown below are reduction potentials for four half-reactions. Which of the coupled reactions is favorable? (Note that for Cytochrome c you must multiply the reduction potential by 2 for each coupled reaction because only one electron is involved) Half-Reaction E" (V) O2(g) + 2 H* + 2 e → H2O +0.815 Cytochrome c (Fe3+) + e → Cytochrome c (Fe2*) +0.22 Fumarate + 2 H* + 2e- → Succinate +0.031 NAD* + H* + 2 e→ NADH -0.315 2 Cytochrome c (Fe3t) + H20 2 Cytochrome c (Fe2*) + O2 NADH + Succinate NAD* + Fumarate O Fumarate + H2O Succinate + 02 O All of the above

Shown below are reduction potentials for four half-reactions. Which of the coupled reactions is favorable? (Note that for Cytochrome c you must multiply the reduction potential by 2 for each coupled reaction because only one electron is involved) Half-Reaction E" (V) O2(g) + 2 H* + 2 e → H2O +0.815 Cytochrome c (Fe3+) + e → Cytochrome c (Fe2*) +0.22 Fumarate + 2 H* + 2e- → Succinate +0.031 NAD* + H* + 2 e→ NADH -0.315 2 Cytochrome c (Fe3t) + H20 2 Cytochrome c (Fe2*) + O2 NADH + Succinate NAD* + Fumarate O Fumarate + H2O Succinate + 02 O All of the above

Biochemistry
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
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QUESTION 4 Shown below are reduction potentials for four half-reactions. Which of the coupled reactions is favorable? (Note that for Cytochrome c you must multiply the reduction potential by 2 for each coupled reaction because only one electron is involved) Half-Reaction E" (V) O2(g) + 2 H* + 2 e → H2O +0.815 Cytochrome c (Fe3+) + e → Cytochrome c (Fe2*) +0.22 Fumarate + 2 H* + 2e-→ Succinate +0.031 NAD* + H* + 2 e→ NADH -0.315 2 Cytochrome c (Fe3+) + H20 2 Cytochrome c (Fe2+) + O2 NADH + Succinate NAD* + Fumarate Fumarate + H2O Succinate + O2 O All of the above
Transcribed Image Text:QUESTION 4 Shown below are reduction potentials for four half-reactions. Which of the coupled reactions is favorable? (Note that for Cytochrome c you must multiply the reduction potential by 2 for each coupled reaction because only one electron is involved) Half-Reaction E" (V) O2(g) + 2 H* + 2 e → H2O +0.815 Cytochrome c (Fe3+) + e → Cytochrome c (Fe2*) +0.22 Fumarate + 2 H* + 2e-→ Succinate +0.031 NAD* + H* + 2 e→ NADH -0.315 2 Cytochrome c (Fe3+) + H20 2 Cytochrome c (Fe2+) + O2 NADH + Succinate NAD* + Fumarate Fumarate + H2O Succinate + O2 O All of the above
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