bio lecture 5. membranes

bio lecture 5. membranes - 8/31/2011 Membranes Dr. Mark...

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8/31/2011 1 Membranes Dr. Mark Holbrook Acknowledgements These slides are modified version of Dr. Menninger’s slides. Last slide set was from Dr. Phillips. Review Question All the cell organelles below have a single surrounding membrane except : a) Lysosome b) Rough ER c) Nucleus d) Smooth ER e) Transport vesicle f) Golgi cisternae
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8/31/2011 2 Review Question All the cell organelles below have a single surrounding membrane except : a) Lysosome b) Rough ER c) Nucleus d) Smooth ER e) Transport vesicle f) Golgi cisternae Cell Membrane Composition Structure Membrane proteins Cell-cell junctions (animal) Random mixing of contents No membrane Membrane separates inside compartment from outside A Cell
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8/31/2011 3 Cell Membrane Structure: Basic structure of membranes is similar Dynamic (fluid) Functions: Barrier Selectively permeable Sensor Adhesion Membrane Composition Phospholipids Proteins Carbohydrates Triglyceride Amphipathic (amphiphilic) Phospholipid glycerol fatty acids
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bio lecture 5. membranes - 8/31/2011 Membranes Dr. Mark...

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