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10 Cards in this Set
- Front
- Back
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Amphipathic |
Hyrdophillic and hyprophobic properties Phospholipids are amphipathic |
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Phospholipids composed of |
Two fatty acid tails Phosphate head Glycerol |
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Polar |
Ones side slightly negative one side slighty positive |
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What can move through bilyaer |
Small nonpolar molecules (not repelled by hydrophobic region) and water despite being polar Small Nonpolar Lipid soluable |
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Channel protiens |
Intregal protiens creates pores in membrane that lets charged particles diffuse down conc gradient Different channel protiens for different charged particles |
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Carrier protiens |
Move larger molecules in or out of cell conc down gradient. Different Carrier protiens for different large molecules |
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Diffusion |
The net movement of particles from a region of high concentration to low (down conc gradient) Passive Small lipid soluble nonpolar aubstancea diffuse through bilayer |
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Osmosis |
Movement of water molecules from a region of high water potential to an area of low WP through a partially permeable membrane |
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Facilitated diffusion |
Movement of large or charged molecules across a membrance assisted by protiens embedded in the membrane |
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Active transport |
Movement of molecules against the conc gradient using a carrier protien |
