110A_07 Lipids - Lipid s Functionsoflipids 1 Energystorage...

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Lipid s
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Functions of lipids 1. Energy storage           Fats and oils 1. Structural components of  membranes           Phospholipids and Sterols 1. Signaling molecules         Steroids and many others Adipocyte (fat cell) with  large lipid droplet nucleus lipid droplet
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Lard (animal fat) Fats and oils Triacylglycerols Saturated fats Unsaturated  fats
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Fats and oils Triacylglycerols Glycerol and fatty acids  are the building blocks. Fatty acids are typically  16 or 18 carbons long,  but can range from 14 to  26 carbons. Nearly all naturally  occurring unsaturated  fatty acids have  cis  double bonds.  Hydrogens are on same  side of the planar double  bond. 
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Trans-Fat Partial chemical hydrogenation generates trans double bonds
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A detergent  micelle  formed from  free fatty  acids
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Image: Graham T. Johnson/fivth.com Membranes Membranes Image: Wataru Shinoda/Research Institute for  Computational Sciences Simulation of a vesicle interacting with a lipid bilayer (lipid  head groups in green and blue, tails in cyan) 
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