Hexokinase vs Glucokinase Flashcards
1
Q
Has a considerably higher Km (lower affinity) for glucose
A
Glucokinase
2
Q
Present in most tissue
A
Hexokinase
3
Q
Its activity increases with increases in the concentration of glucose in the hepatic portal vein
A
Glucokinase
4
Q
Can phosphorylate glucose and other hexoses
A
Both Hexokinase and Glucokinase
5
Q
It acts to ensure an adequate rate of glycolysis to meet the liver’s needs
A
Hexokinase
6
Q
Present only in liver parenchymal cells and Islet cells of the pancreas
A
Glucokinase
7
Q
Has a low Km for glucose
A
Hexokinase
8
Q
High Vmax (Many enzymes) and Km (low affinity)
A
Glucokinase
9
Q
In the liver it is saturated and acting at a constant rate under all normal conditions
A
Hexokinase
10
Q
Liver activity induced by insulin
A
Glucokinase
