Q. Movement and accumulation of ions across a membrane against their concentration gradient can be explained by
A) Active Transport
B) Osmosis
C) Facilitated Diffusion
D) Passive Transport
Explanation
[Solution from source] Active transport uses energy (e.g. ATP) to move substances against the concentration gradient. Answer (1).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.