| A | B |
|---|
| cell | basic unit or organization for living things |
| cell theory | all living things are composed of one or more cells - cell is the basic unit of structure - cells come from pre-existing cells |
| compound light microscope | uses a series of lenses to magnify objects in steps - up to 1500 times |
| electron microscope | uses a beam of electrons to magnify objects up to 100,000 times |
| eukaryote | cells containing membrane bound organelles |
| prokaryote | cells that do not contain membrane bound organelles |
| nucleus | control center of the cell |
| organelle | small specialized structures inside cells |
| fluid mosaic model | describes the way phospholipids move within a membrane - like water molecules move with currents |
| phospholipid | a component of the cell membrane that has a glycerol backbone, two fatty acid chains and a phosphate group |
| selective permeability | a process in which a membrane allows some molecules to pass through while keeping others out |
| transport proteins | move needed substances or wastes in and our of the plasma membrane |
| cilia | short, numerous projectsions that look like hairs and help a cell move |
| chlorophyll | traps light energy in plant cells and gives plants their green color |
| chromatin | strands of genetic material containing instructions for making proteins |
| flagella | long projections that move cells through a whipping motion |
| plastid | type of plant organelle used for storage - stores starch, lipids, pigments (chlorophyll) |
| microtubules | thin hollow cylinders made of protein in the cytoskeleton |
| microfilaments | solid protein fibers in the cytoskeleton |
