Question

diffusion of glucose into rbc is an example of what type of membrane transport?
active transport
diffusion
simple diffusion
facilitated diffusion

Explanation:

Glucose is a polar molecule and cannot pass through the non - polar lipid bilayer of the RBC membrane by simple diffusion. It enters RBCs down its concentration gradient with the help of a carrier protein, which is characteristic of facilitated diffusion. Active transport requires energy and moves substances against the concentration gradient. Simple diffusion is for non - polar and small molecules without the need for a carrier.

Answer:

D. Facilitated diffusion