Biochemistry topic question: Please help. Thank you Following a period of intense exercise, muscle pyruvate dehydrogenase activity is greatlyincreased. Most likely, this increased activity is due to:A. decreased ADP.B. increased acetyl-CoA.C. decreased NADH/NAD + ratio.D. increased pyruvate concentration.

Biochemistry topic question: Please help. Thank you Following a period of intense exercise, muscle pyruvate dehydrogenase activity is greatlyincreased. Most likely, this increased activity is due to:A. decreased ADP.B. increased acetyl-CoA.C. decreased NADH/NAD + ratio.D. increased pyruvate concentration.

Biochemistry

6th Edition

ISBN:9781305577206

Author:Reginald H. Garrett, Charles M. Grisham

Publisher:Reginald H. Garrett, Charles M. Grisham

Chapter22: Gluconeogenesis, Glycogen Metabolism, And The Pentose Phosphate Pathway

Section: Chapter Questions

Problem 20P

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Effects of Changing Metabolite Concentrations on Glycolysis In an erythrocyte undergoing glycolysis what would be the effect of a sudden increase in the concentration of a. AÎ¤P? b. AMP? c. fructose-1.6-bisphosphate? d. fructose-2, 6-bisphosphate? e. citrate? f. glucose-6-phospthate?
Study Figure 19.18 and decide which of the following statements is false. Pyruvate dehydrogenase is inhibited byÂ· NIADH. Pyruvate dehydrogenase is inhibited by AÎ¤Î¡. Citrate synthase is inhibited by NADH. Succinyl-CoA activates citrate synthase. Acetyl-CoA activates pyruvate carboxylase.
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How Is Metabolism Regulated? (Integrates with Chapter 15.) Metabolic regulation is achieved via regulating enzyme activity in three prominent ways: allosteric regulation, covalent modification, and enzyme synthesis and degradation. Which of the.se three modes of regulation is likely to be the quickest; which the .slowest? For each of these general enzyme regulatory mechanisms, cite conditions in which cells might employ that mode in preference to either of the other two.