biology vocab chaoter 3
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Created by:
pinballwizard on September 1, 2009
Classes:
Kewel RANDORKS!, JESUS RULES, ZOMBIE HUNTERS911, Randorks Rule Middle School., RANDOLPH RAIDERS ROCK!!!!!, Randorks Class of 2013 (see more)
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26 terms
Terms | Definitions |
|---|---|
 Light Microscope | Microscope where light passes through one or more lenses to produce an enlarged image of a specimen |
| Electron microscope | Forms an image of a speciman using a beam of electrons rather then light |
| Magnification | The ability to make an image appear larger then actual size |
| Resolution | Measure of the clarity of an image |
| Sconning tunneling microscope | Microscope that uses a needle-like probe to measure differences in voltage caused by electrons that leak, or tunnel, from the surface of the object being viewed |
| Cell Theory | The theory that, all living things are made of one or more cells |
| Cell membrane | Outer boundary of a cell |
| Cytoplasm | Interier of a cell |
| Cytoskeleton | System of microscopic fibers in the cell |
| Ribosomes | Cellular structures on which proteins are made |
| Prokaryote | Single-celled organism that lacks a nucleus and other internal compartments |
| Cell wall | Wall surrounding the cell membrane that provides structure and support |
| Flagella | Long, thread like structures that protude from the cells surface and enable movement |
| Eukaryote | Organism whose cells have a nucleus |
| Nucleus | Internal compartment that houses the cells DNA |
| Organelle | Structure that carries out specific activities in the cell |
| Cilia | Short hairlike structures that protrude from the surface of some eukaryote cells |
| Phospholipid | Lipid made of a phosphate group and two fatty acids |
| Lipid Bilayer | Phospholipids arranged in a double layer |
| Endoplasmic reticulum | Extensive system of internal membranes that move proteins and after substances through the cell |
| Vesicle | Small, membrane-bound sac taht transports substances in a cell |
| Golgi | Set of flattened, membrane-bound sacs that serve as a packaging and distribution center of the cell |
| Lysosomes | Small, spherical organelles that contain the cells digestive enzymes |
| Mitochondria | Organelle that harvests energy from organic compounds to make ATP |
| Chloroplasts | Organells that use light energy to make carbohydrates from carbondioxide and water |
| Central vacuole | Large, membrane-bound space |
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