Lipids

• What are two complex lipids?

  triglycerides & phospholipids
• What do triglycerides contain?

  glycerol & fatty acids
• What group does the fatty acids contain?

  carboxyl group (COOH)
• What group does the glycerol contain?

  hydroxyl group
• What is a saturated bond?

  single bonds
• What does a saturated bond look like?

  C - H
• What is an unsaturated bond?

  double bond
• What does an unsaturated bond look like?

  C = H
• What does polyunsaturated mean?

  many double bonds
• What bond is glycerol formed by?

  esterification
• What type of bond is esterification?

  condensation
• What happens when glycerol and fatty acids combine and create what bond?

  + 3 H2O removed; ester bond
• What are features of saturated triglyceride bonds?

  harder to break & high boiling point
• What are features of polyunsaturated bonds?

  more unsaturated bonds, easier to break
• What is the meaning of hydrophilic?

  water-loving
• What is the meaning of hydrophobic?

  repelling water
• What is this?

  phospholipids

  
• What is the head of the phospholipid called?

  hydrophilic heads
• What is the tail of the phospholipid called?

  hydrophobic tail
• What are two differences between triglyceride and a phospholipid?

  Triglyceride - does not have phosphate

  Phosphate - has both hydrophobic and hydrophilic parts