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chapter 1
living things
Term | Definition |
---|---|
organism | living things |
cell | the basic unit of structure and function in an organism |
unicellular | single celled organisms |
multicellular | composed of many organisms |
stimulus | changes in light,sound, and temperature |
response | an action or change in behavior |
development | process of change that occurs during an organisms life to make more complex organisms |
spontaneous generation | the mistaken idea that living things can arise from non-living sources |
controlled experiment | a scientist carries out 2 tests that are identical in every respect except for 1 factor |
autotroph | organisms that make their own food |
heterotroph | organisms that cannot make their own food |
homeostasis | the maintenance of stable internal conditions |