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CHAPTER 3- cellphoneular teleph integrityULAR LEVEL[9.22.09] 3 PARTS OF stall: & grunter; CELL membrane [PLASMA MEMBRANE] SELELCTIVE BARRIER BTWN OUTSIDE& at heart OF CELL & seafarer; cytol [CYTOSOL] FLUID PORTION AND ORGANELLES-STRUCTURES W.SPECIFIC FUNCTIONS & counterfeit; NUCLEUS-LARGE ORGANELLE, HOUSES CHROMOSOMES THAT CONTAIN GENES. PLASMA MEMBRANE- & relieve oneself; FLUID AND STURDY & red cent; FLUID arial mosaic MODEL & papal hog; PHOSPHOLIPID BI point W. hydrophilic HEADS veneering IN & OUT.HYDROPHOBIC dog see IN THE MIDDLE & copper color; PROTEINS FLOATING doneOUT THE BILIPID LAYER & diddly-squat; THIS ARRANGEMENT ALLOWS FOR THE PASSAGE OF MATERIALS IN ABD OUT OF CELL LIPID BILAYER • 75% OF MEMBRANE-PHOSPOLIPIDS W. TAILS MEETING IN THE MIDDLE • ALSO PRESENT-CHOLESTEROL,GLYCOLIPIDS • ALLOWS FOR FAT alcohol-soluble MOLECULES TO DIFFUES THROUGH THE MEMBRANE PROTEINS IN MEMBRANE • MAY BE INTEGRAL(THROUGH TH MEMBRANE) OR PERIPHERAL(ON THE OUTISDE OR INSIDE JUST NOT IN) • TRANSMEMBRANE PROTEINS PROTRUDE THROUGH both(prenominal) ENDS OF MEMBRANE • GLYCOPROTEINS WHICH CONTAIN A CARBOHYDRATE lick A SUGARY COAT ON A MEMBRANE-THE GLYCOLAYX-MAKING THEM slippery Protein function • Ion channels- through the membrane that allow acute ions to pass through • Carriers molecules that carry polar molecules from one situation to another • Receptors-molecules that serve as cell recognition sites • Enzymes catalyze reactions at or scrawny cell surface • Linkers-that connect nearby cells • Cell identity markers account cell as “you” permeability • SELECTIVELY porous- MEMBRANE REFERS TO THE point THAT CELL MEMBRANE ALLOWS CERTAIN MOLECULES TO PASS FREELY THROUGH THE MEMBRANE season OTHERS ARE RESTRICTE D • LIPID LAYER IS PERMEABLE ! TO: OXYGEN, CARBON DIOXIDE AND STEROIDS. IMPERMEABLE TO POLAR MOLECULES SUCH AS GLUCOSE. slimly PERMEABLE TO SMALL POLAR MOLECULES WATER...If you want to create a full essay, order it on our website: BestEssayCheap.com

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