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9 Cards in this Set
- Front
- Back
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Cell Membrane Functions |
1) Isolate cell from external environment 2) Regulate traffic in and out of cell 3) Communicate with other cells |
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Structure |
Doesn't allow ions or polar molecules; does allow small molecules and non-polar molecules |
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Types of Proteins |
Recognition= ID tags; surface attachment sites for hormones and other similar molecules Receptor= Trigger cell's responses when specific molecules bind to them Transport= regulate movement in and out of cell (channel= water and molecules; carrier= ions and large molecules) |
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Diffusion |
movement of particles; H to L concentration rate is affected by; heat energy, molecule size, size of concentration range (slope), and lipid solubility *passive transport |
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Osmosis |
diffusion of water across a cell membrane Hypertonic= high in cell, low outside (outflow) Hypotonic= low in cell, high outside (inflow) Isotonic= equal water in and out (equilibrium) *passive transport |
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Facilitated Diffusion |
diffusion through channel proteins molecule attaches to protein; protein changes shape; molecule passes through; protein reverts back *passive transport |
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Molecular Transport |
transports proteins and energy from L to H concentration molecule attaches to protein; protein changes shape; molecule is pushed through; protein reverts back *active transport b/c of pushing from L to H |
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Endocytosis |
taking in needed materials to a cell Pinocytosis= liquids Phaygocytosis= solids *active transport (bulk transport) |
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Exocytosis |
disposing of cell products and waste vesicle produced by waste the Golgi App. packaged is fused to cell membrane and releases the waste outside of cell *active (bulk) transport |
