Biochemistry: The Molecular Basis of Life
6th Edition
ISBN: 9780190209896
Author: Trudy McKee, James R. McKee
Publisher: Oxford University Press
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Chapter 13, Problem 71TQ
Summary Introduction
To review:
The differential survival of the C4 plants over C3 plants in case both of these plants aresimultaneously introduced in a single closed jar.
Introduction:
Photosynthesis is one of the most important processes occurring on the surface of the earth. It enables the transformation of light energy into oxygen and carbohydrates as food for plants. It uses carbon dioxide. Another parallel process that utilizes oxygen also occurs in plants and is called photorespiration. It produces a product, which, when further processed releases carbon dioxide.
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Pyruvate is accepted into the TCA cycle by a “feeder” reaction using the pyruvatedehydrogenase complex, resulting in acetyl-CoA and CO2. Provide a full mechanismfor this reaction utilizing the TPP cofactor. Include the roles of all cofactors.
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b. What would you expect the effect on the TCA intermediates for a patientsuffering from vitamin B 5 deficiency?
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Draw the Krebs Cycle and show the entry points for the amino acids Alanine,Glutamic Acid, Asparagine, and Valine into the Krebs Cycle - (Draw the Mechanism).
How many rounds of Krebs will be required to waste all Carbons of Glutamic Acidas CO2?
Chapter 13 Solutions
Biochemistry: The Molecular Basis of Life
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