Biochemistry
6th Edition
ISBN: 9781305577206
Author: Reginald H. Garrett, Charles M. Grisham
Publisher: Cengage Learning
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Chapter 18, Problem 9P
Comparing Glycolysis Entry Points for Sucrose Sucrose can enter glycolysis by either of two routes:
Sucrose phosphorylase:
Sucrose + Pi
Invertase:
Sucrose + H20
Would either of these reactions offer Jin advantage over the other In the preparation of hexoses fur entry into glycolysis?
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The intermediates of glycolysis with a free energy of hydrolysis sufficient to couple conversion of
ADP + phosphate to ATP (a substrate level phosphorylation) include (Choose all that apply)
O phosphoenolpyruvate
O 2-phosphoglycerate
O 1,3-bisphosphoglycerate
O glucose-6-phosphate.
O fructose-6-phosphate.
O fructose-1,6-bisphosphate.
O dihydroxyacetone phosphate
In different organisms sucrose can be cleaved either by hydrolysis or by
phosphorolysis. Calculate the ATP yield per mole of sucrose metabolized by
anaerobic glycolysis starting with (a) hydrolytic cleavage and (b) phosphoro-
lytic dleavage.
The pyruvate →lactate reaction in animals is reversible, but the pyruvate → ethanol fermentation in yeast is irreversible. Explain.
Chapter 18 Solutions
Biochemistry
Ch. 18 - Characterizing Glycolysis List the reactions of...Ch. 18 - Radiotracer Labeling of Pyruvate from Glucose...Ch. 18 - Effects of Changing Metabolite Concentrations on...Ch. 18 - Prob. 4PCh. 18 - Prob. 5PCh. 18 - The Reactions and Meehanisms of the Leloir Pathway...Ch. 18 - The Effect of lodoacetic Acid on the...Ch. 18 - Prob. 8PCh. 18 - Comparing Glycolysis Entry Points for Sucrose...Ch. 18 - Prob. 10P
Ch. 18 - Prob. 11PCh. 18 - Prob. 12PCh. 18 - Prob. 13PCh. 18 - Energetic of Fructose-1 ,6-bis P Hydrolysis...Ch. 18 - Prob. 15PCh. 18 - Energetics of the Hexokinase Reaction The...Ch. 18 - Prob. 17PCh. 18 - Distinguishing the Mechanisms of Class I and Class...Ch. 18 - Prob. 19PCh. 18 - Understanding the Mechanism of Hemolytic Anemia...Ch. 18 - Prob. 21PCh. 18 - Based on your residing of this chapter, what would...Ch. 18 - Examine the ActiveModel for alcohol dehydrogenase...Ch. 18 - Based on your knowledge of the structure of NAD+...Ch. 18 - Using the ActiveModel for phosphofructokinase...
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