BIOS41_Lecture11_02112008

BIOS41_Lecture11_02112008 - 11_12_sealed.compar.jpg...

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BIOS 41 Biology Core I: Cellular and Molecular Spring 2008 Professor J. A. Sands Lecture 11, February 11 Membranes (Chapter 11, pages 365-374)
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11_01_Cell.membranes.jpg Cell membranes act as selective barriers .
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11_02_plasma.membra.jpg The plasma membrane is involved in cell signaling .
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11_03_compartments.jpg Membranes form many different compartments in a eucaryotic cell .
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11_04_membrane.view.jpg Two dimensional and three dimensional drawings of a cell membrane.
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11_06_Phosphatidylch.jpg Phosphatidylcholine is the most common phospholipid in cell membranes .
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11_07_amphipathic.jpg Different types of membrane lipids are all amphipathic.
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11_11_bilayer.in.H20.jpg Amphipathic phospholipids form a bilayer in water.
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Unformatted text preview: 11_12_sealed.compar.jpg Phospholipid bilayers spontaneously close in on themselves to form sealed compartments. 11_13_liposomes.jpg Pure phospholipids can form closed, spherical liposomes . 11_15_Phospho,move.jpg Phospholipids can move within the plane of the membrane . 11_16_Cholesterol.jpg Cholesterol stiffens cell membranes. 11_17_asymmetic.dist.jpg Phospholipids and glycolipids are distributed asymmetrically in the plasma membrane lipid bilayer. 11_18_Flippases.jpg Flippases play a role in synthesizing the lipid bilayer. 11_19_memb.vesicles.jpg Membrane vesicles are generated by budding and fusing ....
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