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2-4 Levels
2-4 Levels of Organization
| Term | Definition |
|---|---|
| levels in order | atom, molecule, organelle, cell, tissue, organ, organ system, organism |
| atom | basic building block of matter |
| molecule | multiple atoms bonded together |
| organelle | a part of a cell that does a specific job |
| cell | the basic unit of life |
| tissue | a group of cells that perform a specific function |
| organ | a group of tissues that work together to perform a specific function |
| organ system | a group of organs that work together to perform specific functions |
| organism | a single individual or living thing |