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Anatomy 1/29-
f-m-w lectures
| Question | Answer |
|---|---|
| Cell Theory | all living things are composed of cells and new cells arise from pre-existing cells |
| cell size | 10-15 micro meters |
| cytoplasam | surrounded by cell membrane, all material between nucleus and cell surface |
| cytoplasm contains | fibers and cytosol |
| all cells have... | plasam membrane, cytoplasm, cytoskeleton, and organelles |
| fluid mosaic theory | way of describing the plasam membrane where protien molecules have a changing patern in the fluid phospholipid bilayer. |
| increases the membrane's stiffness | cholesterol |
| membrane protiens | protiens imbended in the plasma membrane that may or may not pass through entirely (intergral or peripheral) |
| channel protiens | create pores in membrane for passive transfer |
| carriers | involved in active binding and transport of substance across membrane |
| motor molecules | allow cellular movement |
| cell indentity markers | glycoprotiens are recognized by body in tissue transplants |
| cell adhesion | molecules necessary for normal groth in most cells |
| microvilli, cilia, flagella | extensions of the cell membrane |
| cilia | move objects over surface of cell (7-10um) |
| flagella | moves entire cell through fluid (20-200um) |
| Microvilli | smallest* increase surface are of cell membrane to increase absorption. *do NOT move |
| Organelles | carry out specialized metabolic tasks |
| Nucleus | site of DNA/RNA synthesis |
| Endoplasmic Reticulum | Synthesize lipids |
| Golgi Complex | synthesize carbohydrates |
| Exo | outward |
| Endo | inward |
| Mitochondria | systheize ATP |
| Ribosomes | synthesize protien *inside the walls of the Enoplasmic Reticulum |
| Veslce | bubble of plasma mebrane |
| Lysosomes | vesicles of membrane containing hydolytic digestive enzymes. produced by Golgi Complex |
| 2 things that have a double phospolipid bilayer | Mitochondria and nucleous |
| Centrioles | short cylinders of 9 groups of 3 microtubles that assist cell division |
| Cytoskeleton | helps to mainitain cell shape *formed from filamentous protien stuctures |
| Cytoskeleton includes ___ + ____ | microtubules and actin filaments |
| Diffusion | the random movement of molecules from an area of high concentration to an area of low concentration, until equal distribution is attained. |
Created by:
melissanoach
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