| A | B |
| unicellular | organism made f 1 cell |
| multicellular | organism made up of many cells |
| colonial | organism made of many sells, but are independent of each other |
| reproduction | organism copies itself or produces offspring |
| asexual reproduction | "one parent" when a cell splits (no exchange) |
| sexual reproduction | "two parents" m/f exchange or combining genetic material to produce |
| response/reaction | what happens as a result of stimulus |
| stimulus | causes something to happen (a reaction) |
| life span | period of existence |
| metabolism | all chemical reactions in the body (how you use energy) |
| cell | basic unit of life (route of all living things) |
| tissue | groups of similar cells working together |
| organ | group of tissues working together |
| organ system | group of organs working together |
| organism | a living thing (general term) |
| adaptation | how an organism response to change |
| levels of organization | cell, tissue, organ and organ system |