Some substances,such as glucose,are reabsorbed by facilitated diffusion.This means that reabsorption is limited by the
A) amount of ATP available
B) number of carrier molecules present
C) permeability of the tubular cells
D) hydrostatic pressure in the tubule
E) osmotic pressure in the tubule

Question

Quizplus · Accepted Answer

Facilitated diffusion requires carrier molecules to transport substances across the cell membrane. Therefore, the number of carrier molecules present limits the rate of reabsorption. The other options given are not relevant to facilitated diffusion.

Some Substances,such as Glucose,are Reabsorbed by Facilitated Diffusion