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12. Plants & Animals
Organization of life (cell - organism)
Term | Definition |
---|---|
molecule | a group of atoms that are held together by chemical forces |
organelle | one of the small bodies that are found in the cytoplasm of a cell and that are specialized to perform a specific function (ex. mitochondria, vacuole, nucleus) |
cell | the smallest unit that can perform all life processes |
tissue | a group of similar cells that perform a common function |
organ | a collection of tissues that carry out a specialized function of the body |
organ system | two or more organs that work in a coordinated way to carry out similar functions |
organism | a living thing; anything that can carry out life processes independently |
microorganism | a microscopic organism, especially a bacterium, virus, or fungus |