Science-Characteristics of Life
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15 terms
Terms | Definitions |
|---|---|
 Cell | Basic unit of structure and function in an organism |
| Unicellular Cells | Single-celled organisms |
| Multicellular Cells | Composed of many cell organisms |
| Metabolism | Combination of chemical reactions through which an organism builds up or breaks down materials |
| Stimulus | Change in an organism's surroundings that causes the organism to react |
| Response | An action or a change in behavior |
| Development | Process of change that occurs during an organism's life, producing a more complex organism |
| Asexual Reproduction | Involves only one parent and produces offspring that are identical to the parent |
| Sexual Reproduction | Involves two parents and combines their genetic material to produce a new organism that differs from both parents |
| Spontaneous Generation | Mistaken idea that living things can arise from nonliving resources |
| Autotrophs | Organisms that make their own food |
| Heterotrophs | Organisms that cannot make their own food |
| Homeostasis | The maintenance of stable internal conditions |
| Six Characteristics of Living Things | Cells, Similar Chemicals, Use Energy, Respond to Surroundings, Grow and Develop, Reproduce |
| Four Basic Needs of Living Things | Food, Water, Shelter, Stable Internal Conditions |
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