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Chapter 15 Lipids

Chapter 15 Lipids. 15.5 Glycerophospholipids. Fatty acid. Glycerol. Fatty acid. PO 4. Amino alcohol. Glycerophospholipids. Glycerophospholipids are the most abundant lipids in cell membranes. composed of glycerol, two fatty acids, phosphate, and an amino alcohol. Fatty acid.

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Chapter 15 Lipids

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  1. Chapter 15 Lipids 15.5 Glycerophospholipids Fatty acid Glycerol Fatty acid PO4 Amino alcohol

  2. Glycerophospholipids Glycerophospholipidsare • the most abundant lipids in cell membranes. • composed of glycerol, two fatty acids, phosphate, and an amino alcohol. Fatty acid Glycerol Fatty acid PO4 Amino alcohol

  3. Polarity of Glycerophospholipids A glycerophospholipid has • two nonpolar fatty acid chains. • A phosphate group and a polar amino alcohol. CH3 │+ + HO−CH2−CH2−N−CH3 HO−CH2−CH2−NH3 │ choline CH3 ethanolamine + NH3 │ Amino alcohols HO−CH2−CH−COO− serine

  4. Structure and Polarity of A Glycerophospholipid

  5. Lecithin and Cephalin Lecithin and cephalin are glycerophospholipids • abundant in brain and nerve tissues. • found in egg yolk, wheat germ, and yeast.

  6. Learning Check Identify each as A. fatty acid B. triacylglycerol C. amino alcohol D. glycerophospholipid 1. glyceryl trioleate 2. cephalin 3. choline 4. palmitic acid

  7. Solution Identify each as a: A. fatty acid B. triacylglycerol C. amino alcohol D. glycerophospholipid 1. glyceryl trioleate B. triacylglycerol 2. cephalin D. Glycerophospholipid 3. choline C. amino alcohol 4. palmitic acid A. fatty acid

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