- Created by: Dan_23
- Created on: 16-05-21 10:19
Active transport is the movement of molecules across a cell memebrane from a region of lower concentration to a region of higher concentration - movement of solutes against a concentration gradient requires energy/ATP from respiration.
Passive transport = Diffusion + osmosis/ doesnt invole energy
Active transport = cellular respiration for energy
1) Molecule attaches to carrier protein
2) ATP molecule provides energy to go from low concentration to high concentration or against a concentration gradient
3) Carrier protein changes shape and moleule is released on the other side (side with higher concentration…