| Term | Definition |
| metabolism | how an organism gets and uses its energy |
| metabolism | the sum total of all energy reactions to support life in an organism` |
| stimulus | change in an organism's surroundings that causes an organism to react |
| response | an action or change in behavior that occurs as a result of a stimulus |
| cell | basic unit of structure and function of a living thing |
| reproduction | the production of offspring that are similar to the parent |
| sexual reproduction | production of offspring requiring two parents joining their genetic material |
| asexual reproduction | production of offspring from the division of one parent -- genetic material is identical in both cells |
| biotic | a living thing -- exhibits all 6 characteristics of living things |
| abiotic | a nonliving thing -- does no exhibit all 6 characteristics of living things |