Chapter 2 Focus on Life Science
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15 terms
Terms | Definitions |
|---|---|
 Characteristics of Living Things | made of cells, need energy, grow and develop, respond to the environment, reproduce, adaptations to the environment, produce waste |
| organism | a living thing that has (or can develop) the ability to act or function independently |
| stimuli | What all living things respond to |
| response | an action or change in behavior that occurs as a result of a stimulus |
| growth | increase in the amount of living material and formation of new structures in an organism; a characteristic of all living things |
| Cell | (biology) the basic structural and functional unit of all organisms |
| Molecule | the simplest structural unit of an element or compound |
| tissue | a part of an organism consisting of an aggregate of cells having a similar structure and function |
| organ | a fully differentiated structural and functional unit in an animal that is specialized for some particular function |
| organ system | group of organs that work together to perform a specific function |
| homeostasis | process by which organisms maintain a relatively stable internal environment |
| photosynthesis | the process by which plants make food |
| taxonomy | practice of classifying plants and animals according to their presumed natural relationships |
| species | group of similar organisms that can breed and produce fertile offspring |
| energy | (physics) the capacity of a physical system to do work |
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