| A | B |
|---|
| cell | The basic unit of structure and function of a living thing |
| Organism | a living thing |
| Unicellular | One - celled organism |
| Multicellular | Many-celled organism |
| Stimulus | Signal to which an organism reacts; change in the environment |
| Response | A reaction or movement of an organism brought on by a stimulus |
| Biotic | Living parts of an ecosystem |
| Abiotic | Non-living parts of an ecosystem |
| Autotroph | An organism that makes its own food |
| Heterotroph | An organism that CANNOT makes its own food |
| Spontaneous | The mistaken idea that living things arise from nonliving sources |
| Homeostasis | The maintenance of stable internal conditions in an organism |
| Sexual Reproduction | Reproduction with 2 parents |
| Asexual Reproduction | Reproduction with only 1 parent (cell dividing) |
