Term
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Definition
| Separates living cell from surroundings |
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Term
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Definition
| Allows some substances to cross more easily than others |
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Term
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Definition
| Most abundant lipid in plasma membrane-hydrophobic tails and hydrophilic heads. |
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Term
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Definition
| Membrane is a fluid structure with a "mosaic" of proteins |
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Term
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Definition
Effects membrane at different temperatures
-Warm:restrain phospholipid movement
-Cool:Move easily and prevents tight packing |
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Term
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Definition
| Small, bound to SURFACE of membrane |
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Term
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Definition
| Large, Penetrates hydrophobic core |
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Term
| Membrane Protein Functions |
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Definition
| Transport, enzymatic activity, signal transduction, cell to cell recognition,intercellular joining, and attach cytoskeleton and extra cellular matrix |
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Term
| Hydrophobic Molecules and bilayer |
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Definition
| Non-polar,molecules/hydrocarbons, dissolve easy and fast |
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Term
| Hydrophilic Molecules and bilayer |
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Definition
| Polar, molecules/sugars, do not pass easily and need a transport protein |
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Term
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Definition
| all hydrophilic substances to cross membrane |
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Term
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Definition
| Molecules spread evenly into avalible space |
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Term
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Definition
| Diffusion across membrane without energy |
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Term
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Definition
| Diffusion of water across membrane |
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Term
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Definition
| Ability of surrounding solution to cause cell to gain or lose water |
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Term
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Definition
| Solute and cell same concentration =NO MOVEMENT |
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Term
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Definition
| Solute concentration less in cell, water move out |
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Term
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Definition
| Solute concentration greater in cell, water move in |
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Term
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Definition
| Controls solute concentration and water balance=NECESSARY FOR ADAPTION |
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Term
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Definition
| They are hypotonic to pond water, uses contractile vacoule pump out excess water |
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Term
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Definition
| Plant is in hypertonic solute and loses water-memebrane pulls away from cell wall |
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Term
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Definition
| Transport vesicle fuses with membrane and releases contents-secretory cells |
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Term
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Definition
| Take macromolecules by making vesicles from plasma membrane |
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