Lipids

• What is the result of the reaction between glycerol and 3 fatty acids?

  A lipid and 3 water molecules
• What is the bond formed between glycerol and fatty acids called?

  An ester bond
• What are the components of a triglyceride?

  • Glycerol
  • 3 fatty acids
• What test is used for lipids?

  Sudan III test
• What indicates a positive Sudan III test for lipids?

  A red layer on top
• How do you test for lipids using ethanol and water?


  Add ethanol, then add water and shake to form a white emulsion
• What state are triglycerides typically in at room temperature?

  Solid
• What distinguishes saturated fatty acids from unsaturated fatty acids?

  Saturated fatty acids have no double bonds, while unsaturated fatty acids have double bonds