Contain 1 double bond double bond usually has cis

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Unformatted text preview: s !  Unsaturated fatty acids !  Contain ≥ 1 double bond !  Double bond usually has cis configuration !  Degree of saturation determines how they pack !  Fatty acids not typically found in free In aqueous environment form !  Usually esterified to glycerol + Acyl Chain Saturation 7 Ordered = rigid (butter) Disordered = fluid (oil) Saturated Unsaturated Lipids are mostly (i.e. most of surface area) hydrophobic Ordered microdomain = lipid raft + 8 Types of Lipids ! Triacylglycerols !  Glycerol (triglycerides) backbone !  Esterified to 3 fatty acids !  Fatty acid chains may be different !  Provides variety of structure/function + 9 Types of Lipids ! Triacylglycerols (triglycerides) !  Do not form bilayers !  Not part of biological membranes !  Aggregate into globules !  Stored as energy source Fat globules in hepatocytes + 10 Types of Lipids ! Triacylglycerols !  Glycerol (triglycerides) backbone !  Esterified to 3 fatty acids !  Fatty acid chains may be different + Glycerophospholipids 11 •  Glycerol backbone •  R1 and R2 are fatty acid chains •  X = functional group •  Phosphate means amphipathic molecule (-) •  Phospholipids are abundant in biological memb...
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