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Lecture 9 - Lecture 9 Lipids Membranes and First Cells...

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Lecture 9 Lipids, Membranes and First Cells Chapter 6
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Topics Fats and Oils - Triglycerides, Saturated and Unsaturated Fatty Acids Phospholipids - Characteristics, Amphipathic molecule Constituent of lipid bilayer Carotenoids - Pigments Steroids - Cholesterol, Hormones Vitamins and Waxes
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Lipids Lipids are nonpolar hydrocarbons: Fats and oils energy storage Phospholipids cell membranes Carotenoids Steroids Fats serve as insulation in animals, lipid nerve coatings act as electrical insulation, oils and waxes repel water, prevent drying.
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Fats and Oils Fats and oils are triglycerides simple lipids made of three fatty acids and 1 glycerol. Glycerol: 3 OH groups an alcohol Fatty acid: nonpolar hydrocarbon with a polar carboxyl group carboxyl bonds with hydroxyls of glycerol in an ester linkage .
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