Lipids

• Lipids do not...


  form polymers
• Three types 


  • Fats
  • Phosphates
  • Steroid
• Fats


  made from two different molecules via dehydration synthesis

  fatty acids and Glycerol/Glycerin
• Glycerol/Glycerin


  • 3 carbon alcohol

  
• Fatty Acid


  • Carboxyl Group head (Acidic, Polar)
  • long carbon skeleton (Non-Polar)
  • Unsaturated or Saturated

  
• Saturated Fats 


  • Animals
  • Solid at room temp.
  • straight
• Unsaturated Fats


  • Fish and vegetable oils
  • Liquid at room temp.
  • Bent
• Fat uses 


  • Energy storage
  • Cushion
  • Insulation
• Phospholipids


  Similar to fats but has 2 fatty acids instead of 3
• Phospholipid Molecule 


  .

  
• third part of glycerol (phospholipids) is joined to...


  phosphate group
• Steroids


  the carbon skeleton of 4 fused rings

  • all have cholesterol base
  • add functional groups and they change the type of steroid