| A | B | 
|---|
| Cell Theory | All living things are composed of cells. | 
| organism | a living thing | 
| Cell Theory | All cells are produced by other cells | 
| cell | The basic unit of living things | 
| membrane | like a baggy holding the cell together | 
| cytoplasm | liquid that fills the cell | 
| organelles | the little parts of the cell | 
| nucleus | protects the DNA (chromosomes) | 
| mitochondria | energy center that burns sugars for energy | 
| cell wall | rigid outside wall that gives plants shape | 
| vacuole | stores and moves chemicals | 
| chloroplasts | turn light, carbon dioxide, and water into oxygen and sugars to store energy | 
| bacteria | simpler single-celled organisms | 
| viruses | not like cells, but reproduce | 
| microscope | tool used to magnify slides | 
| stage | where you put slides on a microscope | 
| magnification | how close yo can see | 
| Hooke | described cork cells | 
| unicellular | one celled organism | 
| multicellular | many celled organism | 
| Cell Theory | The cell is the basic unit of living things. |