Which process moves an ion across a cell membrane against the concentration gradient?
A B C D
diffusion exocytosis facilitated diffusion active transport
Question: Which process moves an ion across a cell membrane against the concentration gradient?
(A) diffusion
(B) exocytosis
(C) facilitated diffusion
(D) active transport

Answer: (D) active transport
Answer: (C) facilitated diffusion
Question: Which process moves an ion across a cell membrane against the concentration gradient?
(A) diffusion
(B) exocytosis
(C) facilitated diffusion
(D) active transport
Answer: (D) active transport