| A | B |
| Organism | a living thing |
| Cell | the basic unit of structure and function of an organism |
| Unicellular | an organism that is made of one cell |
| Multicellular | an organism that is made of many cells |
| Developement | the process of an organism becoming more complex |
| Growth | the process of an organism getting larger |
| Stimulus | a change in an organisms surrounding that causes it to react |
| Response | an organisms reaction to a stimulus |
| Reproduce | the production of offspring that are similar to the parent |
| Spontaneous Generation | the mistaken idea that living things arise from nonliving sources |
| Autotroph | an organism that makes its own food |
| Heterotroph | an organism that cannot make its food |
| Homeostasis | the maintenance of stable internal conditions |