| A | B |
| Cell | Building block of life. |
| Cell Theory | Three basic statements about all cells. |
| Eukaryotic Cell | Cells that have a nucleus. |
| Nucleus | Control center of the cell. |
| Organelle | Part of the cell. |
| Plasma Membrane | Outside of a cell that controlls what moves in and out. |
| Prokaryotic Cell | Cells that don't have a nucleus. |
| Fluid Mosaic Model | A membrane made up of many parts that can move. |
| Phopholipid bilayer | Membrane that has two layers made up of fats and phosphates. |
| Selective Permeability | When some substances can move through something and others cannot. |
| Transport Protein | Proteins that help move big materials across the membrane. |