| A | B |
|---|
| selectively permeable | allowing movement of substances, especially oxygen, water, food, molecules, carbon dioxide and waste products into or out of the cell |
| equilibrium | a state that occurs when molecules evenly spread through a space |
| passive transport | movement of molecules from a more crowded to a less crowded area WITHOUT the use of energy |
| diffusion | movement of molecules from a region of higher concentration to a region of less concentration |
| osmosis | diffusion of water through a membrane |
| active transport | movement of molecules from a less crowded area to a more crowded area WITH the use of energy |
| hypertonic solutions | solutions in which MORE SOLUTE is present |
| hypotonic solutions | solutions that LESS SOLUTE present |
| isotonic solutions | solutions that have equal concentrations of substances |
