Transcription of Chapter 5: Cell Membrane Structure and Function
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Chapter 5: Cell Membrane Structure and Function
1 Chapter 5:Cell Membrane Structure and FunctionChapter 5: Membrane Structure and FunctionPlasma Membrane :Thin barrier separating inside of cell (cytoplasm) from the outside environmentFunction: 1) Isolate cell s content from outside environment2) Regulate exchange of substances between inside / outside cell3) Communicate with other cells4) Create attachments within / between cells5) Regulate biochemical reactionsNote:Membranes also exist withincells forming various compartmentsMembrane consists of embeddedproteins that shift and flow withina layer of phospholipidsThe Fluid Mosaic Model( Singer & Nicolson, 1972) Figure Audesirk2& Byers2 PhospholipidBilayer: Double layer of phospholipidsLipid tails of phospholipidsare unsaturated (C = C) Hydrophilic ends form outer border Hydrophobic tails form inner layerChapter 5: Membrane Structur
1 Chapter 5: Cell Membrane Structure and Function Chapter 5: Membrane Structure and Function Plasma Membrane: Thin barrier separating inside of cell (cytoplasm) from the outside environment
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