| A | B |
|---|
| absorption | Usable materials taken into the cell. |
| acrobic | Organisms that need oxygen for respiration. |
| anaerobic organisms | Organisms that do not need oxygen for respiration. |
| autotroph | Organisms that are able to make their own food. |
| circulation | movement of materials within the cells. |
| digestion | process that changes food that can be used by the cell. |
| egestion | removes undigested materials from the body. |
| excretion | removal of waste produced in the cells. |
| growth | An increase in size and/or number of cells. |
| heterotroph | Organisms that are not able to make food. |
| ingestion | Taking in food from the environment. |
| life functions | processes that are common to all living things. |
| metabolism | processes needed by an organism to maintain life. |
| nutrients | parts of food that can be used by the cell. |
| nutrition | life process by which organisms obtain and process food. |
| organisms | Living things. |
| regulation | life activity responsible for the control and coordination. |
| reproduction | The production of new organisms. |
| respiration | chemical reactions that release energy for life activities. |
| synthesis | producing complex substances from simple substances. |
| transport | the circulation and absorption of nutrients. |
| feedback mechanism | used for self-regulation |
| homeostasis | maintenance of a stable internal environment. |
