front 1 diffusion | back 1 the movement of particles from an area where their concentration is high to an area where their concentration is low |
front 2 osmosis | back 2 the diffusion of water across a cell membrane |
front 3 passive transport | back 3 the diffusion of particles through protiens in the cell membrane from areas where the concentration of particles is high to areas where the concentration is low |
front 4 active transport | back 4 the movement of particles through protiens in the cell membrane against the direction of diffusion; requires cells to use energy |
front 5 endocytosis | back 5 the process in which a cell membrane surronds a particle and encloses it in a vesicle to bring it into the cell |
front 6 exocytosis | back 6 the process used to to remove large particles from a cell; during exocytosis, a vesicle containing the particles fuses with the cell membrane |