| Term | Definition |
|---|---|
| single-celled organism | an organism that only has one cell |
| bacteria | a single celled organism without an organized nucleus |
| cell | the basic unit of all living things |
| cell membrane | the boundary the surrounds a cell and controls which substances can enter or leave the cell |
| cell nucleus | an organelle in a cell that holds the cells DNA |
| cytoplasm | The liquid inside of a living cell |
| micro organism | an organism that is too small to see with your eyes |
| chloroplasts | an organelle in a plant cell that turns energy from the sun into chemical energy for the plant to use |
| multi-celled organism (multicellular) | an organism consisting of many cells |
| paramecium | a single celled organism that is found in pond water. It looks like a grain of rice |
