Q. Which of the following criteria does not pertain to facilitated transport ?
A) Requirement of special membrane proteins
B) High selectivity
C) Transport saturation
D) Uphill transport
Explanation
[Solution from source] Facilitated transport moves molecules down their concentration gradient through special membrane proteins, so it is selective and saturable but needs no energy. Uphill transport against a gradient requires energy and is active transport. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.