| A | B |
|---|
| absorption | Useable materials are taken into cell. |
| aerobic organisms | 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 | The movement of materials within the cells or throughout an organisms. |
| digestion | The process that changes food into a form that can be used by the cell. |
| egestion | The process that removes undigested materials from the body. |
| excretion | The removal of waste materials produced in the cells as a result of life activities. |
| growth | An increase in size and/or number of cells of an organism. |
| heterotroph | Organisms that are not able to make their own food. |
| ingestion | Taking in food from the environment. |
| life functions | The processes activities that are common to all living things. |
| metabolism | All of the chemical processes of life considered together, the sum total of all of the cell's chemical activities |
| nutrients | The parts of food that can be used by the cell. |
| nutrition | The life process by which organisms obtain and process food. |
| organisms | Living things. |
| regulation | The life activity responsible for the control and coordination of all the various activities of an organism. |
| reproduction | The production of new organisms. |
| respiration | A complex series of chemical reactions that releases energy for life activities. |
| synthesis | The process of producing complex substances from simple substances. |
| transport | The life process involved with the circulation and absorption of nutrients. |
| homeostasis | the maintenance of a relatively stable internal environment, despite changes in the external environment |
| sexual reproduction | 2 parents, offspring show variations |
| asexual reproduction | one parent, no variations in offspring |
| cells | basic unit of structure and function in living things, carry on all of the life activities |
