Answer:
In cellular biology, active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration—against the concentration gradient.
Explanation:
I hope I helped
xsdcfvgbhnj
A:Scientific evidence must be reported, verified, and accepted by the scientific community
B:amino acid
aaaay another flvser
Traction
zzzzzzzzzzzzzzzzzzz