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| A change in an organism's surroundings that causes the organism to react. |
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| An action or change in behavior |
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| The process of change that occurs during an organism's life to produce a more complex organism. |
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| Single-celled organisms,include bacteria |
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| organisms are composed of many cells. In many multicllular organisms, the cells are specialized to do certain tasks. |
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| A living thing that has cellular organization, contains similar chemicals, responds to the environment, uses energy, grows and develops and reproduces |
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| Genetic material instruction maul |
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| A scientist carries out two tests that are identical in every respect except for one factor. The one factor that a scientist changes is called the manipulated. |
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| It took hundreds of years of experiments to convince people that spontaneous generation does not occur |
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| Autotrophs use the food they make to carry out their own life functions. |
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| Heterothrophs mean other. They obtain their energy by feeding on others. Some heterothrophs eat autotrophs and use the energy in the erotrophs that eat autotrophs. |
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| Homeostasis keeps internal conditions just right for cells to function. |
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| The basic unit of structure and function in an organism |
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