Hydrocarbons

  • hydrogen+carbon, petroleum, engine fuel
  • must use fire to release energy
    • the heat of fire injects oxygen
  • cannot mix with water
    • oily carbon without any oxygen of water

Carbohydrates

  • carbon+hydration (water), adds oxygen
  • can burn into energy without fire
    • due to oxygen being attached into the molecule
  • can mix with water
    • oxygen of water dominates the oily carbon

Lipids

  • cannot mix with water, oil like, hydrophobic
  • carbon atoms dominate oil, fat, wax, lipids
    • the foundation of our membranse and skin the repels water
  • oxygen atoms dominate water, blood plasma, body fluids,
    • the foundation of breathing, digestion, elimination

Fatty acids

  • a type of carbohydrate
    • oxygen of water at one end - hydrophilic
    • oily carbon at the other end - hydrophobic
  • useful for membranes
    • skin
    • arteries
  • separates fluids into compartments
    • eye
    • gallbladder
    • urninary bladder
    • lymph fluid
    • blood
    • heart
  • the carbon end stops water - fatty
    • basically a hydrocarbon of 14 to 24 carbons
    • carbon atoms tend to be pair-like, even numbered
  • the oxygen end mingles with water - acid
    • the acid end is the same as the amino acids
      • amino acid
      • fatty acid

Triglycerides

  • built with a 3 carbon sugar - glycerol
  • this 3 carbon sugar can bond with up to 3 fatty acids
  • mono-glyceride
    • 3 carbon sugar - glycerol
    • one (mono) fatty acid
  • di-glyceride
    • 3 carbon sugar - glycerol
    • two (di) fatty acids
    • neuro transmitter
    • Transient Receptor Potential (TRP)
      • sight, vision
      • hearing, sound
      • mood, thoughts
    • lipid bilayer
      • key to membranes
  • tri-glyceride
    • 3 carbon sugar - glycerol
    • three (tri) glyceride
    • not useful in membranes
      • often rejected to cause an immune response
      • attacked by white blood cells, leukotriene
      • inflammatory reaction

Phospholipid

  • diglyceride where phosphate takes the place of a fatty acid
  • key for
    • digestion
    • membranes, allowing passage of
      • oxygen
      • water
      • nutrietrients
      • carbon dioxide
      • proteins
  • same 3 carbon glycerol sugar holding it together
  • important for myelin sheaths and memory

Summary

  • we need phospholipids
  • triglycerides are not