8. Lipids.pdf - Untitled Document 1 of 5 https/lms.virtualhighschool.com/content/OSSD-v2/Department/Scien Listen Lipids The lipids are a large and

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Lipids The lipids are a large and diverse group of naturally occurring organic compounds that are related by the fact that they are insoluble in water. There is great structural variety among these lipids. Fats The simplest lipids are the fatty acids. Fatty acids have two features; a long chain hydrocarbon chain and a carboxyl group (-COOH) at one end. The hydrocarbon chain length ranges from 4 to 30 carbons but 12-24 is most common. The chain is typically linear, and usually contains an even number of carbons. Fatty acids are either saturated or unsaturated fatty acids. Saturated fatty acids are so called because each carbon atom in the chain holds all the possible hydrogen atoms it can as none of the bonds between the carbons are double bonds. These fatty acids tend to be solids at room temperature. Two examples of saturated fatty acids would be palmitic and stearic acid. Unsaturated fatty acids do not hold all the hydrogen atoms they can hold, as there is at least one carbon-carbon double bond in addition to the single bonds between carbon atoms. These double bonds in the chains cause the chains to Fatty Acid Stearic acid, a saturated fatty acid Listen Untitled Document ...
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