Starting metabolic substrate: 3-phosphoglycerate Ending metabolic substrate: Oxaloacetate For just one substrate: Net ATP: Total NADH and FADH2 produced: ATP from coenzymes: Total ATP produced: Number of starting metabolic substrates: 4 For just one substrate Net ATP: 4 Total NADH produced: 8 Total FADH2 produced: 2 ATP from coenzymes:(2.5)(4) +(1.5)(2)= 13 Total ATP produced: 24 For all 4 substrate Net ATP: 16 Total NADH produced: 32 Total FADH2 produced: 4 ATP from coenzymes: Total ATP produced:

Starting metabolic substrate: 3-phosphoglycerate Ending metabolic substrate: Oxaloacetate For just one substrate: Net ATP: Total NADH and FADH2 produced: ATP from coenzymes: Total ATP produced: Number of starting metabolic substrates: 4 For just one substrate Net ATP: 4 Total NADH produced: 8 Total FADH2 produced: 2 ATP from coenzymes:(2.5)(4) +(1.5)(2)= 13 Total ATP produced: 24 For all 4 substrate Net ATP: 16 Total NADH produced: 32 Total FADH2 produced: 4 ATP from coenzymes: Total ATP produced:

Biochemistry

6th Edition

ISBN:9781305577206

Author:Reginald H. Garrett, Charles M. Grisham

Publisher:Reginald H. Garrett, Charles M. Grisham

Chapter20: Electron Transport And Oxidative Phosphorylation

Section: Chapter Questions

Problem 19P

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Characterizing Glycolysis List the reactions of glycolysis that a. are energy consuming (under standard-stale conditions), b. are energy yielding (under standard-state conditions), c. consume ATP. d. yield ATP e. are strongly influenced by changes in concentration of substrate and product because of their molecularity. f. are at or near equilibrium in the erythrocyte (see Table 18.2).
Figure 27.3 illustrates the response of R (ATP-regenerating) and U (ATP-utilizing) enzymes to energy charge. a. Would hexokinase be an R enzyme or a U enzyme? Would glutamine: PRPP amidotransferase, the second enzyme in purine biosynthesis, be an R enzyme or a U enzyme? b. If energy charge = 0.5: Is the activity of hexokinase high or low? Is ribose-5-P pyrophosphokinase activity high or low? c. If energy charge = 0.95: Is the activity of hexokinase high or low? Is ribose-5-P pyrophosphokinase activity high or low?
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Both prokaryotic and eukaryotic organisms carry out some form of glycolysis. How does ha fact support or not support the assertion that glycolysis is one of the oldest metabolic pathways?
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