| Term | Definition |
| diffusion | the process of a movement of molecules from an area of higher concentration to an area of lower concentration, therefore distributing themselves evenly through random movement |
| osmosis | diffusion of a solution from a hypotonic to a hypertonic solution through a semi permeable material, |
| concentration gradient | the gradual difference in concentration of a dissolved substance in a solution between a region of high density and one of lower density. |
| hypotonic | contains more solvent than solute, the solute moves in to the cell and can cause it to grow and grow and grow until it bursts |
| hypertonic | more solute than solvent, the solute moves out of the cell and can cause it to shrink and shrink and shrink until it shrivels up and dies |
| isotonic | has equal amounts of solvent and solute, the cell remains the same |
| Zaccharias and Hans Janssen | invented the first compound microscope |
| when looking under a microscope. . . | things are larger, upside down, and flipped |
| powers of a microscope | lowest: 40X higher: 100X |
| independent variable | can be manipulated by the experiment (time or temperature) and typically will affect the dependent variable |
| dependent variable | what is measured in an experiment; what is affected by the experiment |