Consider an erythrocyte with an internal glucose concentration of 0.1 mM and an external glucose concentration of 5 mM. Each of the following is true about GLUT1 transport of glucose across the plasma membrane into the cell except
A) Keq is always equal to 1.
B) ΔG depends on the concentration gradient.
C) inward movement is exergonic.
D) ΔG° is always equal to 0.
E) the rate of GLUT1 transport is faster than that of simple diffusion.