Question 12

(Multiple Choice)

The glucose uniporter GLUT1 has a Km of 1.5 mM for d-glucose and 30 mM for d-galactose.At a concentration of 5 mM for each,what is the rate of glucose transport relative to galactose transport? The Vmₐₓ may be assumed to be the same for both.


A)3.7-fold slower
B)equal
C)5.5-fold faster
D)20-fold faster

Answer