| A | B |
|---|
| light microscope | a series of lenses to magnify objects in steps |
| Cell theory 3 | All cells come from preexisting cells |
| Cell theory 2 | The cell is basic unit of structure |
| Cell theory 1 | All organisms made of one or more cells |
| organelles | small, specialized structures within cells |
| prokaryotes | do not have membrane bound organelles |
| eukaryotes | contain membrane bound organelles |
| nucleus | manages and controls cellular function |
| plasma membrane | flexible boundary between the cell and its environment |
| selectively permeable | membrane allows some moleules to pass and keeps others out |
| phospholipid | lipids attached to phosphate group |
| fluid mosaic model | model of plasma membrane; fluid because phospholipids move |
| Transport protein | moves needed substances through plasma membrane |
