Question

Is my answer correct?

Hexokinase has a Km of 0.05 mM and a Km of 1.5 mM for D-Fructose. From this we can conclude that:

A. The Vmax of Hexokinase with D-Fructose is 3x the Vmax with D-Glucose

B.Hexokinase has a greater affinity for D-Glucose than for D-Fructose

C. D-Glucose is a better substrate for Hexokinase than D-Fructose

D. It takes less D-Glucose for the reaction to reach ½ Vmax than D-Fructose

E. Answers b, c, d

F. Answers d & c

I thought E was correct

Answer 1

I'm going to assume that you meant to say the Km of hexokinase with D-Glucose is .05mM.

But yes. You are correct again.