Friday, February 27, 2015

LIPIDS (FATS)


https://www.youtube.com/watch?v=VGHD9e3yRIU




  • Triglyccerides: 3 fatty acid tails (stores energy in body)
  • Lipases: enzymes that break down triglycerides into energy
  • Phospholipids: cell membrane-two fatty acid tails with a head and a negatively charged phosphate group.  (Tails are uncharged).  These form spheres or “Micelles”.  All cells are phospholipid bi-layers.
  • Cholesterol: maintains fluidity of cell membranes.  It holds fatty-acid tails of phospholipids.  It maintains integrity of cell membranes by inter-locking and over-lapping the phospholipid tails.
  • Hydrocarbons: give energy on the carbon tail of the triglyceride (stuff that burns)
  • Glycerold head and fatty-acid tail
  • Saturated: Hydrogen on the outside-straight line hydrocarbon tail.  Solid at room temperature (worst fat for us).
  • Unsatruated-double bonds between carbons eliminate hydrogen and creates kinks.  Liquid at room temperature.

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