Bio Lecture 6 - Bio Lecture 6 (9/19/11) Fats are made up of...

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Bio Lecture 6 (9/19/11) Fats are made up of 4 components- a glycerol and 3 fatty acids. Typically a 3 Carbon alcohol Fats are used for energy storage, insulation, and cushion Fatty acids (palmitic acid) have long hydrocarbon chains, that will connect to each (3) hydroxyl group on the glycerol Fatty acids can be pretty much any length Ester linkages are the bonds between the glycerol and fatty acids. (3 of them) o Forming a fat molecule (triacylglycerol/triglycerides) Different kinds of fats: o Saturated fats- hydrocarbon chains contain no double bonds. All single bonds. Completely “saturated” with Hydrogens. NO KINKS. Tend to be solid at room temp o Unsaturated fats- contains double bonds between carbons (C=C). Tend to be liquid at room temp. Oils are usually unsaturated. Can be monounsaturated (only one double bond) or polyunsaturated (more than one double bond). Kinks because of cis isomers o Trans fats- mimic saturated fats because they are straight chained. Lots of hydrogens. o
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Bio Lecture 6 - Bio Lecture 6 (9/19/11) Fats are made up of...

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