Life
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Created by:
coolbreeze9 on September 24, 2011
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17 terms
Terms | Definitions |
|---|---|
 organism | a living thing that has (or can develop) the ability to act or function independently |
| cell | (biology) the basic structural and functional unit of all organisms |
| unicellular | having or consisting of a single cell |
| multicellular | consisting of many cells |
| metabolism | set of chemical reactions through which an organism builds up or breaks down materials as it carries out its life processes |
| stimulus | a change in an organism's surroundings that causes the organism to react |
| response | the organisms reaction |
| development | act of improving by expanding or enlarging or refining |
| asexual reproduction | reproduction without the fusion of gametes |
| sexual reproduction | reproduction involving the union or fusion of a male and a female gamete |
| spontaneous generation | a hypothetical organic phenomenon by which living organisms are created from nonliving matter |
| controlled experiment | a test of the effect of a single variable by changing it while keeping all other variables the same |
| autotroph | plant capable of synthesizing its own food from simple organic substances |
| heterotroph | an organism that cannot make its own food |
| homeostasis | metabolic equilibrium actively maintained by several complex biological mechanisms that operate via the autonomic nervous system to offset disrupting changes |
| manipulating variable | variable that is deliberately changed |
| responding variable | factor in an experiment that a scientist wants to observe, which may change in response to the manipulated variable; also known as a dependent variable |
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