| A | B |
|---|
| cell | The basic unit of living organisms. |
| compound light microscope | Instrument that use a series of lenses to magnify an object. |
| cell theory | Idea that all organisms are composed of cells, the cell is the basic unit of life, and cells come from preexisting cells. |
| electron microscope | Instrument that uses a beam of electrons to magnify things up to 500,000 times. |
| prokaryote | Cells like bacteria with no membrane-bound structures or nucleus. |
| eukaryote | Cells with membrane-bound structures (organelles) and a nucleus. |
| organelle | Membrane-bound structure found in eukaryote cells. |
| nucleus | Organelle that contains DNA and controls the function of the cell. |
| plasma membrane | Boundary between a cell and its environment. |
| homeostasis | Process of maintaining the cell's internal environment. |
| selective permeability | Process by which cell membranes allow only certain molecules to enter the cell. |
| phospholipid | Molecules that make up the bulk of a cell's membrane. |
| fluid mosaic model | Model of the cell membrane that describes the membrane as fluid and embedded with protein molecules. |
| transport protein | Type of protein that allows certain molecules to pass in or out of a cell. |
