Flashcards in Lecture 25 - Glycolysis & Gluconeogenesis Deck (13)
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1
The reaction of glucose to _______ is governed by hexokinase.
Hexokinase is inhibited by ____________.
A. G-6-P; G-6-P
B. G-6-P, F-1,6-BP
C. G-1-P, F-2,6-BP
C. F-1-P, ATP
A. G-6-P, G-6-P
2
G-6-P to _____ is governed by phosphofructokinase.
PFK is inhibited by _______ and _____.
A. F-1,6-BP, G-6-P
B. ATP, Citrate
C. AMP, F-2,6-BP
D. F-1,6-BP, AMP and F-2,6,BP
B. ATP, Citrate
3
Pyruvate kinase catalyzes the reaction of PEP to _____. This reaction is inhibited by ______.
A. DHAP; F-2,6-BP and ATP
B. 3-PG; F-1,6-BP & Insulin
C. Pyruvate; Alanine, ATP, and Glucagon
D. Pyruvate; Insulin and F-1,6-BP
C. Pyruvate; Alanine, ATP, and Glucagon
4
G-6-P to _____ is governed by phosphofructokinase.
PFK is stimulated by _______ and _____.
A. F-1,6-BP, G-6-P
B. ATP, Citrate
C. AMP, F-2,6-BP
D. F-1,6-BP, AMP and F-2,6,BP
D. F-1,6-BP, AMP and F-2,6,BP
5
Pyruvate kinase catalyzes PEP to pyruvate. This reaction is stimulated by:
A. F-2,6-BP and ATP
B. F-1,6-BP and Insulin
C. F-2,6-BP and insulin
D. F-1,6-BP
D. F-1,6-BP
6
Insulin transporter in the brain; high glucose affinity
A. GLUT 1
B. GLUT 2
C. GLUT 3
D. GLUT 4
A. GLUT 1
7
Main GLUT in neurons
A. GLUT 1
B. GLUT 2
C. GLUT 3
D. GLUT 4
C. GLUT 3
8
Insulin dependent GLUT in skeletal m., heart, adipose.
A. GLUT 1
B. GLUT 2
C. GLUT 3
D. GLUT 4
D. GLUT 4
9
Main GLUT in liver, low affinity without regulation.
A. GLUT 1
B. GLUT 2
C. GLUT 3
D. GLUT 4
B. GLUT 2
10
Fructose can enter glycolysis at what location(s)?
A. G-6-P and F-1-P
B. DHAP and GAP
C. G-6-P and F-6-P
B. DHAP and GAP
11
Translocation of this enzyme into the nucleus of hepatocytes helps stop glycolysis in the presence of low blood sugar.
Glucokinase (low insulin=low blood sugar=high glucagon)
12
This is the rate limiting step of glycogen production
Glycogen synthase activity (addition of glucose to chain)
13
