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Life Functions
Term | Definition |
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Nutrition | involves the activities involved in ingestion, digestion and egestion |
Transport | includes the absorption of materials into the body and the circulation of materials to all the cells of the organism |
Respiration | includes the chemical activities that release energy for use by the cells; requires oxygen for breathing |
Excretion | includes all activities involved in the elimination of waste products from the organism |
Growth | increases in size brought about by increase in cell size and cell number |
Synthesis | involves chemical reactions in which small molecules combine to form larger ones |
Regulation | involves the control and coordination of life functions |
Reproduction | results in the production of new individuals |
Metabolism | all the chemical activities that an organism must carry on to sustain life |
Homeostasis | maintenance of a stable environment in spite of changes in the external environment |