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romello's cards
vocabulary
Term | Definition |
---|---|
atoms | the smartest part of a cell |
molecules | made of one or more atoms bonded |
organelles | composed of molecules,and carry out spefitic functions for each cell |
cells | smallest functional unit of life.all living orgnanisms are composed of one or more cells |
tissues | make up the second level of organization.they are formed by joining of the cells that have similar functions. |
organs | a group of tissues that perform a specific function or group functions |