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| Amphipathic nature of phospholipids |
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Definition
| Have a hydrophobic (nonpolar) region and Hydrophilic (polar) fatty acyl tails. The talis face each other and form the interior of the membrane. |
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Term
| Membrane is semi-fluid because... |
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Definition
| The lipids and proteins embedded in the layer can move freely relative to one another. (fluid-mosaic model) |
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| Any solution that causes a cell to shrink due to osmosis of water leaving the cell |
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| Any solution the causes a cell to swell when placed in it. |
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Definition
| Conditions in which the solute concentrations are on both sides of the plasma membrane are equal. (cell does not shrink of swell) |
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| The transport of a substance across a membrane from a region of high concentration to a region of lower concentration. |
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Definition
| Moves a substance from an area of low concentration to high concentration of against the chemical gradient with the aide of a transport protein. |
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Definition
| A transport protein provides a passageway for the substance to cross the membrane. |
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| When a substance moves across a membrane from an area of high concentration to an area of lower concentration. |
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| The movement of water across membranes to balance solute concentrations. Water diffuses from a solution that it hypotonic to hypertonic. |
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