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Cells
Vaocabulary Unit 1, Lesson 2
Word | Definition |
---|---|
unicellular | One-celled organisms that can carry out all the processes of life |
organism | An individual living thing |
multicellular | Organisms that are made of many different kinds of cells |
tissue | A group of similar cells that do the same job in an organism |
organ | Made up of tissues of different kinds that come together to do a particular job |
organ system | A group of organs that work together to do a certain job |