Biochemistry
6th Edition
ISBN: 9781305577206
Author: Reginald H. Garrett, Charles M. Grisham
Publisher: Cengage Learning
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Chapter 18, Problem 21P
Interpretation Introduction
Interpretation:
The correct option regarding the phosphofructokinase should be identified.
Introduction:
Phosphofructokinases are kinase group of enzyme, phosphorylates fructose-6 phosphate by utilizing ATPs.
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Students have asked these similar questions
Regarding phosphofructokinase, which of the following statements is true:
a.
Low [ATP] stimulates the enzyme, but fructose-2,6-bisphosphate inhibits.
b.
High [ATP] stimulates the enzyme, but fructose-2,6-bisphosphate inhibits.
c.
The enzyme is more active at low [ATP] than at high, and fructose-2,6-bisphosphate activates the enzyme.
d.
High [ATP] stimulates the enzyme, and fructose-2,6-bisphosphate activates.
The reaction catalyzed by glyceraldehyde 3-phosphate dehydrogenase involves two "sub-reactions", one of which is unfavourable. How is the energy barrier of this unfavourable sub reaction overcome?
A. through the formation and hydrolysis of a thioester bond using a cysteine molecule in the enzyme
B. through the hydrolysis of an ATP molecule
C. through the hydrolysis of a thioester bond in the substrate molecule
D. the enzyme catalyzes the formation of a thioester bond
E. none of these explanations describe how the energy barrier is overcome
Please answer asap
Which of the following describes a purpose for the function of phosphoglucoisomerase?
a) allows for phosphorylation for trapping the molecule in the cell
b)promotes substrate level phosphorylation and formation of ATP
c) allows formation of a primary alcohol necessary for the next step of phosphorylation
d)facilitates epimerization, the change in stereochemistry at one chiral carbon
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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