Regan C1 Bio. First half of ch seven.
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Created by:
jeneane8687 on November 2, 2010
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Not everything from the notes.. but most of it. All from chapter seven.
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31 terms
Terms | Definitions |
|---|---|
 Robert Hooke | Discovered cells while looking at cork. |
| Anton Van Levwenhoke | Discovered single-celled organisms. & thought that cells were found in animals as well as plants. |
| Maththias Schleiden | Stated all plants contained cells. |
| Theodor Schwann | Stated all animals contained cells. |
| Rudolf Virchow | Concluded that cells must arise form pre-existing cells. |
| Cell Theory | 1. All organisms are composed of one or more cells. 2. The cell is the basic unit of life in all things. 3. All cells are produced by the division of pre-existing cells. |
| Prokaryotic Cells | No nucleus. |
| Eukaryotic Cells | Have a nucleus. |
| How to calculate total magnification on a microscope. | Eyepiece 10x times Scanning 4x = 40x Eyepiece 10x times Low 10x = 100x Eyepiece 10x times High 40x = 400x |
| Electron Microscope | Focuses beams of electrons on specimens. Can form images of objects 1000x smaller than those visible under light microscope. |
| Scanning Electron Microscope | Produces 3d images of the surfaces of organisms. |
| Transmission Electron Microscope | Beam of electrons shine through a specimen. |
| Cell Membrane | Boundary between cells & external environment. Semi permeable. |
| Cell Wall | Found outside the cell membrane in plant, fungi, & bacterial cells. Gives support and is made of cellulose. |
| Nucleus | Controls most cell processes w. DNA. |
| Chromatin | Long strands of DNA. |
| Chromosomes | Supercoiled chromatin. |
| Nucleolus | Produces ribosomes. |
| Nuclear envelope | Surrounds nucleus, double layer, has pores. |
| Cytoskeleton | Network of protein fibers that help cells keep shape. |
| Microtubules | Thin hollow cylinders that help keeps shape & separate chromosomes during cell division. |
| Cilia | Short hairlike projections |
| Flagella | Long whip-like projection. |
| Pseudopods | Temporary foot-like projections. |
| Ribosomes | Site of protein synthesis. |
| Endoplasmic Reticulum | Assemble and transport of proteins. |
| Golgi Apparatus | PACKAGES AND EXPORTS ALL CELL PRODUCTS. |
| Vacuole | Stores water, salts, proteins, & carbs. |
| Lysosome | Contains enzymes for digestion food and old cell parts. |
| Mitochondria | Converts glucose to ATP. |
| Chloroplast | Uses sunlight to make energy-rich food. |
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