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Chapter 5

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Biology 1001A
Tom Haffie

Chapter 5Cell Membranes and SignallingWhy it matters Cystic Fibrosissuffer from a progressive impairment of lung and gastrointestinal function Caused by mutation to a gene that codes for a protein called the cystic fibrosis transmembrane conductance regulator CFTR Normal CFTRCl is pumped out of the cells that line lungs and intestinal tractkeep the lining wet51 An Overview of the Structure of Membranesdevelopment of plasma membranekey to evolution acts as selective permeable barrierallowed for compartmentalization of processes and increased complexity51a A Membrane Consists of Proteins in a Fluid of Lipid MoleculesThe Fluid Mosaic Model proposes that the membrane consists of a fluid lipid bilayer in which proteins are embedded and float freely the model refers to the fact that most membranes contain an assortm
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