| Term | Definition |
| Diffusion | Substances that pass across the membrane from a greater concentration to one of lesser concentration. >< |
| Osmosis | Diffusion through a selective permeable membrane in which some materials can diffuse while others cant . Does not require cell energy < > |
| Semipermeable | Membrane some items can move through while others cant |
| Filtration | Solutes move across a semipermeable membrane from high pressure to lower pressure. Movement of both water and solutes through a membrane because of a greater pushing force one one side of the membrane than the other. >< |
| Active Transport | Molecules move across membrane from low concentration to high concentration. < > |
| Phagocytosis | To injest (cell eating ) |
| Pinocytosis | Cell drinking (requires cell energy) |
| Metastasis | Spread of disease from one organ to another non adjacent organ |