5 2 of 10All the dehydrogenases of glycolysis and the citric acid cycle use NAD* (E" for NAD"/NADH is -0.32 V) as electron acceptorexcept succinate dehydrogenase, which uses covalently-bound FAD (E" for FAD/FADH2 in this enzyme is 0.050 V). The Evalue for fumarate/succinate is 0.031 V.Calculate the AG value for the oxidation of succinate using NAD*.AG68kJ/molCalculate the AG° value for the oxidation of succinate using covalently-bound FAD.AG =-3.7kJ/molBased on the E° values of fumarate/succinate, NAD*/NADH, and the succinate dehydrogenase FAD/FADH,, why is FAD amore appropriate electron acceptor than NAD* in the dehydrogenation of succinate? Calculate the AG" value for the oxidation of succinate using covalently-bound FAD.AG =-3.7kl/molBased on the E'o values of fumarate/succinate, NAD/NADH, and the succinate dehydrogenase FAD/FADH, why is FAD amore appropriate electron acceptor than NAD* in the dehydrogenation of succinate?Thenegative - standard free-energy change favors the oxidation of succinate by covalently-bound FAD. This isconsistent with K'Oxidation by NAD* would require a large.standard free-energy change,with K'e favoring th= 1.of succinate.> 1.< 1.

Free energy change gives the spontaneity of a reaction.

Answered: Calculate the AG value for the…

Calculate the AG value for the oxidation of succinate using NAD*. AG" 68 kl/mol Calculate the AGe value for the oxidation of succinate using covalently-bound FAD. AG -3.7 kJ/mol

Chemistry

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Question

2 of 10
All the dehydrogenases of glycolysis and the citric acid cycle use NAD* (E" for NAD"/NADH is -0.32 V) as electron acceptor
except succinate dehydrogenase, which uses covalently-bound FAD (E" for FAD/FADH2 in this enzyme is 0.050 V). The E
value for fumarate/succinate is 0.031 V.
Calculate the AG value for the oxidation of succinate using NAD*.
AG
68
kJ/mol
Calculate the AG° value for the oxidation of succinate using covalently-bound FAD.
AG =
-3.7
kJ/mol
Based on the E° values of fumarate/succinate, NAD*/NADH, and the succinate dehydrogenase FAD/FADH,, why is FAD a
more appropriate electron acceptor than NAD* in the dehydrogenation of succinate?

Calculate the AG" value for the oxidation of succinate using covalently-bound FAD.
AG =
-3.7
kl/mol
Based on the E'o values of fumarate/succinate, NAD/NADH, and the succinate dehydrogenase FAD/FADH, why is FAD a
more appropriate electron acceptor than NAD* in the dehydrogenation of succinate?
The
negative - standard free-energy change favors the oxidation of succinate by covalently-bound FAD. This is
consistent with K'
Oxidation by NAD* would require a large.
standard free-energy change,
with K'e favoring th
= 1.
of succinate.
> 1.
< 1.

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