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The Cell tissue layer AP biota Phospholipides ? phosphate head ? Phosphate attracted to water deliquescent hydrophobic Fatty acid repelled by water ? Fatty acid tails ? ? place as a bilayer Aaaah, one of those structurefunction examples AP biology Arranged as a Phospholipid bilayer ? Serves as a cellular telephoneular restraint / b guild wampumpeag diametric deliquescent heads H 2O season non diametric hydrophobic tails impermeable to charged molecules polar hydrophilic heads waste AP Biology lipids Cell membrane defines cell ? Cell membrane separates living cell from aqueous milieu ? thin barrier = 8nm fat allows some substances to cross much easily than others ? hydrophobic (nonpolar) vs. hydrophilic (polar) ? Controls traffic in & divulge of the cell ? AP Biology Permeability to polar molecules? ? Membrane becomes semi-permeable via protein take ? specific transmit allow specific ma terial crosswise cell membrane H 2O inside cell aa sugar NH3 AP Biology salt outside cell Cell membrane is more than lipids ? Transmembrane proteins embedded in phospholipid bilayer ? create semi-permeabe channels protein channels in lipid bilyer membrane lipid bilayer membrane AP Biology Why are proteins the perfect molecule to flesh structures in the cell membrane? AP Biology 2007-2008 Classes of amino group acids What do these amino acids have in car park? nonpolar & hydrophobic AP Biology Classes of amino acids What do these amino acids have in common? I exchangeable the polar ones the best! AP Biology polar & hydrophilic Proteins domains anchor molecule ? Within membrane ? gum elastic areas of protein nonpolar amino acids ? hydrophobic ? anchors protein into membrane ? On outer(a) surfaces of membrane in fluid ? polar amino acids ? hydrophilic ? extend into AP Biology extra cellular fluid & into cytosol Nonpolar ar! eas of protein H+ H+ Examples...If you want to compact a full essay, order it on our website: OrderCustomPaper.com

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