BIOG 1440- Final Exam Guide - Comprehensive Notes for the exam ( 41 pages long!)
28 Mar 2018
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Learning objectives: describe membrane bilayer organization (fluid mosaic model, explain membrane proteins" interaction w/ membrane, describe critical roles of membrane proteins in cell physiology. Membrane structure and function: plasma membrane: separates living cell from surroundings, selective permeability: allows some substances to cross it more easily than others i. Oxygen crosses easily, for example: water does not flow through easily, membranes are essential for cell function, movement is facilitated by aquaporin (membrane protein, keep outside out and inside in, cytosol/cytoplasm : region inside. Phospholipids: most abundant lipid in membrane: amphipathic molecules--contain hydrophobic and hydrophilic, can exist as stable boundary b/n two aqueous compartments regions ii. And what happens when cells experience different conditions? i. i. Vary fluidity by varying membrane components proteins embedded in it: fluid mosaic model: a membrane is a fluid structure with a mosaic of various. Phospholipids in membrane can move laterally within bilayer but do not readily flip from one layer to the other.
