Each of the following is an example of facilitated diffusion except

Question

Quizplus · Accepted Answer

Facilitated diffusion is a process where substances move across cell membranes with the help of membrane proteins, without the expenditure of cellular energy. Options A, B, C, and D involve transport proteins or channels that facilitate the movement of molecules or ions across the membrane. However, option E, oxygen transport, does not typically involve a specific transport protein for its movement across cell membranes; instead, oxygen diffuses directly through the lipid bilayer of the cell membrane due to its small size and nonpolar nature, making it an example of simple diffusion rather than facilitated diffusion.

Each of the Following Is an Example of Facilitated Diffusion