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BiologicalMolecules160-page11

BiologicalMolecules160-page11 - —C=O | OH • Each carbon...

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Biological Molecules - 11 Structure of Fats and Oils (the Triglycerides) One molecule of the alcohol, glycerol Attached to the glycerol (by dehydration synthesis) are 3 fatty acids. The fatty acids determine the characteristics or properties of the fat. The bond formed between the –OHs of the alcohol and the –OHs of the fatty acid is an ester bond. Fatty acids are chains of hydrocarbons 4—22 carbons long with the carboxyl functional (acid) group at end
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Unformatted text preview: —C=O | OH • Each carbon within the chain has 2 spots for bonds with hydrogen • If each carbon has 2 hydrogens the fatty acid is saturated H H H H H H H O=C–C–C–C–C–C–C–C–H HO H H H H H H H • If two carbon atoms are double bonded, so that there is less hydrogen in the fatty acid, it is monounsaturated H H H H H H H H H O=C–C–C–C=C–C–C-C-C-C-C–C–H HO H H H H H H H H H H H...
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