Q. Which of the following is not correct regarding carrier molecules, involved in facilitated diffusion?
A) They are responsible to concentrate solute molecules on the side of membrane
B) They are responsible to increase the speed of transport across a membrane
C) They may be under conformational change upon binding of solutes
D) They possess specific binding sites for molecules to be transported
Explanation
Carrier molecules or carrier proteins involved in facilitated diffusion, facilitate the diffusion of hydrophilic substances through biological membrane. They are specific and allow the cells to select solute of an appropriate size to be transported. Carrier proteins can increase the rate of diffusion and may undergo change upon binding to solutes
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.