| A | B |
|---|
| Materials that are needed by the cell that move through their membranes | water, food and ions |
| Movement of molecules that does not require energy | passive transport |
| Type of molecule movement that occurs when only certain types of molecules are allowed to pass through membrane channels | selective transport |
| Diffusion using a carrier molecule | facilitated diffusion |
| Movement of molecules that does require energy | active transport |
| The movement of molecules from an area of high concentration to an area of low concentration | diffusion |
| the movement of molecules from an area of low concentration to an area of high concentration | active transport |
| the movement of water from an area of high concentration to an area of low concentration | osmosis |
| Type of active transport that enables the cell to admit ions needed for important biological processes, such as the conduction of nerve impulses | sodium-potassium pump |
| Type of active transport used to pump protons (H+ ions) across a membrane | proton pump |
| the movement of large molecules into the cell | endocytosis |
| the movement of large molecule out of the cell | exocytosis |
| The process that uses the proton pump in the production of energy | chemiosmosis |
