| A | B |
|---|
| unicellular | single celled organisms |
| multicellular | multi-celled organisms |
| microscope | an instrument that makes an object bigger than it is. |
| cell theory 1 | every living thing is made of one or more cells |
| cell theory 2 | cells carry out functions needed to support life. |
| cell theory 3 | cells come only from other LIVING CELLS. |
| bacteria | single celled organisms that cause sickness |
| Louis Pasteur | scientists that discovered "germs" and "pasteurization" |
