structure of lipids

• • Fatty acids - linear chains of carbon and hydrogen that terminate with a carboxyl group (carboxylic acid)
• a triglyceride is three fatty acids bound to a glycerol molecule 
• Phospholipids - start out with the same glycerol molecule, but two fatty acids are attached and one phosphate group
• cholesterol is defined as an unsaturated four-ring hydrocarbon with a hydroxyl group
• Cholesterol ester - variation of cholesterol; fatty acid attached to hydroxyl group
• lipoproteins are spherical shaped transport molecules; have exterior monolayer of phospholipids