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Celeste Gable
Chapter 7 Vocab (Sections 1&2)
| Term | Definition |
|---|---|
| cell | basic unit of living organisms |
| compound light microscope | uses series of lenses to magnify objects in steps |
| cell theory | all organisms are composed of one or more cells, the cell is the basic unit of structure and organization of organisms, all cells come from preexisting cells |
| electron microscope | uses beam of electrons instead of light to magnify |
| organelle | specialized structures inside cells |
| prokaryote | do not have membrane-bound organelles |
| eukaryote | cells containing membrane-bound organelles |
| nucleus | central, membrane-bound organelle that manages or controls cellular functions |
| plasma membrane | flexible boundary between the cell and its environment, to allow a steady supply of these nutrients to come into the cell no matter what the external conditions are |
| selective permeability | process in which a membrane allows some molecules to pass through while keeping others out |
| phospholipid | has a glycerol backbone, two fatty acid chains and a phosphate group |
| fluid mosaic model | model of plasma membrane |
| transport protein | move needed substances or waste materials through plasma membrane |
| organization | orderly structure of cells in an organism |
| ion | atom or group of atoms with a positive or negative electrical charge |
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celeste.gable
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