1. Why is the chemical logic behind the phosphorylation of glucose by hexokinase? a. So that we end the preparatory phase with 2 3-carbon compounds. b. to provide a substrate for phosphohexose isomerase. c. "Locks" Glucose in the cell. d. to decrease the ΔG of the next reaction. 2. What type of reaction does glyceraldehyde-3-phosphate dehydrogenase catalyze? a. isomerization b. group transfer c. oxidation d. dehydration
1. Why is the chemical logic behind the phosphorylation of glucose by hexokinase? a. So that we end the preparatory phase with 2 3-carbon compounds. b. to provide a substrate for phosphohexose isomerase. c. "Locks" Glucose in the cell. d. to decrease the ΔG of the next reaction. 2. What type of reaction does glyceraldehyde-3-phosphate dehydrogenase catalyze? a. isomerization b. group transfer c. oxidation d. dehydration
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
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Question
1. Why is the chemical logic behind the phosphorylation of glucose by hexokinase?
a. So that we end the preparatory phase with 2 3-carbon compounds.
b. to provide a substrate for phosphohexose isomerase.
c. "Locks" Glucose in the cell.
d. to decrease the ΔG of the next reaction.
2. What type of reaction does glyceraldehyde-3-phosphate dehydrogenase catalyze?
a. isomerization
b. group transfer
c. oxidation
d. dehydration
Expert Solution
Step 1
Glycolysis is a cytoplasmic mechanism that provides energy by breaking down glucose into two molecules of pyruvate in a series of step-by-step processes which are catalyzed by a set of enzymes. The end products of the reaction include 2 pyruvate, 2 ATP, and 2 NADH molecules.
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