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science
Chapter 1 Lesson 1
Term | Definition |
---|---|
organism | A living thing. |
cell | Small building blocks that make up organisms. |
unicellular | Single-celled organisms like bacteria. |
multicellular | Organism that are composed of many cells. |
metabolism. | The combination of chemical reactions through which an organism builds up or breaks down materials. |
stimulus | Your reactions to things |
response | An action or change in behavior. |
development | The process of change that occurs during an organism’s life, producing a more complex organism. |
asexual reproduction | Involves only one parent to produce offspring that are in identical to the parents. |
sexual reproduction | Involves two parents and combine their genetic material to produce a new organism that differs from both parents. |
spontaneous generation | The mistaken idea that living things can arise from nonliving sources. |
Controlled experiment | A scientist carries out a series of tests that are identical in every respect except for one factor. |
autotrophs | Organisms that make their own food. |
heterotrophs | Organisms that can't make their own food. |
homeostasis | The maintenance of stable internal conditions. |