| A | B |
|---|
| Simple diffusion through bilayer | Lipid-soluble substances & water move down their concentration gradients |
| Osmosis | Movement of water through a selectively permeable membrane |
| Facilitated diffusion | Passive; requires transporter protein |
| Active transport | Requires transporter protein & direct energy from ATP |
| Endocytosis | Any form of vesicular transport that brings something IN to the cell |
| Exocytosis | Uses a vesicle to send something OUT of the cell |
| Receptor-mediated endocytosis | Specific ligand combines with receptor & is brought in by a vesicle |
| Phagocytosis | Solid particle is brought in by a vesicle |
| Pinocytosis | Liquid droplet is brought in by a vesicle |
| Simple diffusion through channel | An ion could move down its concentration gradient by this process |
