CHOOSE THE CORRECT LETTER 1.Which of the following substrates is used in the first oxidation step of the Kreb's cycle to produce NAH and CO2? A. isocitrate B.a-ketoglutarate C. citrate D. succinyl-CoA 2.What is the reason for isomerization of citrate to isocitrate? A.The reaction converts a tertiary alcohol, which cannot easily be oxidized, to a secondary alcohol that can be oxidized B. Isocitrate protects cells from the toxic effects of arsenite ion. C. The reaction is one major regulatory step for the citric acid cycle because it functions as a rate limiting step. D. Isocitrate is a substrate for a reaction that occurs spontaneously without enzymatic catalysis
CHOOSE THE CORRECT LETTER 1.Which of the following substrates is used in the first oxidation step of the Kreb's cycle to produce NAH and CO2? A. isocitrate B.a-ketoglutarate C. citrate D. succinyl-CoA 2.What is the reason for isomerization of citrate to isocitrate? A.The reaction converts a tertiary alcohol, which cannot easily be oxidized, to a secondary alcohol that can be oxidized B. Isocitrate protects cells from the toxic effects of arsenite ion. C. The reaction is one major regulatory step for the citric acid cycle because it functions as a rate limiting step. D. Isocitrate is a substrate for a reaction that occurs spontaneously without enzymatic catalysis
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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CHOOSE THE CORRECT LETTER
1.Which of the following substrates is used in the first oxidation step of the Kreb's cycle to produce NAH and CO2?
A. isocitrate
B.a-ketoglutarate
C. citrate
D. succinyl-CoA
2.What is the reason for isomerization of citrate to isocitrate?
A.The reaction converts a tertiary alcohol, which cannot easily be oxidized, to a secondary alcohol that can be oxidized
B. Isocitrate protects cells from the toxic effects of arsenite ion.
C. The reaction is one major regulatory step for the citric acid cycle because it functions as a rate limiting step.
D. Isocitrate is a substrate for a reaction that occurs spontaneously without enzymatic catalysis
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