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1Five common and biochemically important types of lipids1. Free Fatty Acids
2. Triacylglycerols
3. Phospholipids
4. Glycolipids
5. Steroids
2CompositionSimple lipids, complex lipids, and precursor and derived lipids
3Functionenergy usage/ storage, structural, and signaling, pigments, cofactors
4Simple lipidsFats, Triacylglycerol (TAG), waxes
5Complex lipidsPhospholipids, glycolipids, sulfolipids, aminolipids, lipoproteins
6Precursor and derived lipidsFatty acids, steroids, eicosanoids, ketone bodies, vitamins, hormones
7Fatty acids, steroids, eicosanoids, ketone bodies, vitamins, hormonesChains of hydrogen-bearing carbon atoms, called hydrocarbons, which terminate with carboxylic acid groups
8From which carbon molecule are fatty acids numbered in a fatty acid chain?From the carboxyl carbon (numbered 1)
9Esterified vs. Unesterified Fatty acidsFatty acids occur in the body mainly as esters in natural fats and oils
They are found in the unesterified form as free fatty acids, a transport form in the plasma.