| A | B |
| Biology | The study of organisms. |
| Reproduction | The production of new organisms |
| Organism | Name given to any living thing |
| Species | Organisms that can reproduce and produce fertile offspring |
| Growth | Permanent increase in size of an organism |
| Environment | An organisms surroundings |
| Stimulus | Any change in the environment to which the organism adjusts |
| Response | The reaction to a stimulus |
| Homeostasis | Maintaining constant living conditions |
| Energy | An organism needs this to do work |
| Adaptation | A change in an organism allowing it to be better |
| Evolution | The gradual changes which occur over time |
| Metabolism | All the chemical reactions in an organism |
| Excretion | Removing waste products |
| DeoxyribonucleicAcid | DNA |
| Gametes | Sex cells |
| Autotrophic | Self feeding |
| Heterotrophic | Feeding on other organisms |
| Respiration | Releasing energy from food |
| Locomotion | Movement of the whole organism |