| A | B |
|---|
| Passive processes | Processes that allow for movement across the the cell's plasma membrane but does not require energy |
| Diffusion | Movement of solutes from an area of high concentration to low concentration; passive |
| Down a Concentration Gradient | Moving from an area of high concentration to an area of low concentration |
| Facilitated diffusion | A transporter helps a large molecule through the plasma membrane; passive |
| Osmosis | Movement of a solvent down a concentration gradient; passive |
| Active processes | Require energy for moving materials across the cell plasma membrane |
| Up the concentration gradient | Moving from an area of low concentration to an area of high concentration |
| Endocytosis | Movement of substances into a cell by phagocytosis and pinocytosis; active |
| Phagocytosis | Cell-eating; active |
| Pinocytosis | Cell-drinking; active |
| Exocytosis | Movement of substances out of a cell; active |
| Transcytosis | Vesicles undergoing endocytosis on one side of the cell and exocytosis on the other; active |
| Na/K (Sodium-Potassium) pump | Sends Na OUT of the cell and K INTO the cell; active |
