| A | B |
|---|
| unicellular | An organism made up of only one cell. |
| specialization | Term used to describe that specific cells perform specific functions. |
| prokaryotic cell | A cell that lacks or doesn’t have a nucleus. |
| multicellular | An organism that is made up of many cells. |
| tissue | A group of similar cells that are organized to do a specific job. |
| eukaryotic cell | A cell that has a nucleus. |
| organ | A group of tissues that work together to perform a particular function. |
| model | something a scientist uses to study something that is hard to study in reality. |
