Unformatted text preview: Fatty acids—carboxylate plus ~18-22 carbons. Saturated or unsaturated. Cis vs trans fats; health implications. Triglycerides—Three fatty acids bound via ester linkages to glycerol. Used to store energy, provide insulation. Phospholipids—Glycerol with two fatty acids and a polar head group. Spontaneously forms micelles in water due to hydrophobic effects . Basis of cell membranes. Differences between saturated and unsaturated FA’s. Other kinds of lipids—glycolipids Steroids—Hydrocarbons with three 6-membered rings and one 5-member ring with hydrocarbon tail. Cholesterol serves as precursor for steroid hormones, bile salts, enzyme co-factors. Also affects membrane structure and function. Bacteria don’t have these in their membranes. LDL, HDL, chylomicrons—storage particles for transport of lipids; phospholipids, triglycerides, cholesterol, proteins. Cholesterol and heart disease....
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- Spring '08