| A | B |
| Cell | The basic unit of structure & function |
| Unicellular | Single-celled organism |
| Multicelluluar | Organism composed of many cells |
| Water | Most abundant chemical in cells |
| Organism | Living thing |
| Development | Process of change in an organism |
| Growth | Process of becoming larger |
| Stimulus | A change in an organism's surroundings that causes an organism to react |
| Response | An action or change in behavior that happens as a result of a stimulus. |
| Reproduce | Ability to produce offspring |
| Spontaneous Generation | The mistaken idea that living things arise from non-living sources. |
| The four things all organisms need to stay alive: | Energy, Water, Living space, Stable internal conditions |
| Autotrophs | Organisms that make their own food |
| Heterotrophs | Organisms that cannot make their own food. |
| homeostasis | The ability to maintain stable internal conditions despite the changes in the environment. |
| All living things have 6 common characteristics: | cellualar organization, contain similiar chemicals, use energy, grow and develop, respond to their environment, reproduce |