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9 Cards in this Set
- Front
- Back
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fluid mosiac model |
model that describes the arrangement and movement of molecules that make up a cell membrane |
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selective permeability |
condition or quality of allowing some but not all materials to cross a barrier or membrane |
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receptor |
protein that detects a single molecule and performs an action in response |
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passive transport |
movement of molecules across the cell membrane without energy input from the cell |
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diffusion |
movement of dissolved molecules in fluid or gas from a region of higher concentration to a region of lower concentration |
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concentration gradient |
difference in the concentration of a substance from one location to another |
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osmosis |
diffusion of water molecules across a semi permeable membrane from an area of high water concentration to an area of lower concentration |
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cell membrane |
double layer of phospholipids that forms a boundary between a cell and the surrounding environment, also controls the passage of materials in and out of the cell |
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phospholipid |
molecule that forms a doubled layered cell membrane |
