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unit 4; section 4
homeostasis and cells
Term | Definition |
---|---|
organ system | Group of organs that work together to perform a specific function Ex: digestive, circulatory, respiratory |
organ | Group of tissues that work together to perform closely related functions |
tissue | Group of similar cells that perform a particular function |
cell | Basic unit of all forms of life |
multicellular organism | Multiple celled living creature that meets all criteria of a living thing |
homeostasis | Relatively constant internal physical and chemical conditions that organisms maintain |
unicellular organism | Single celled living creature that meets all criteria of a living thing |