Lipids

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Author:
saitclt
ID:
198359
Filename:
Lipids
Updated:
2013-02-06 08:29:44
Tags:
CLT2 SAIT BCHM335
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Description:
Terms and concepts related to lipids
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  1. Fats are typically ___ and come from ____ while oils are typically ___ and come from ___
    • Fats, solid, animals
    • Oils, liquid, plants
  2. The backbone of a triglyceride is
    glycerol
  3. Are fatty acids typically branched?
    No, they're made up of straight chain carboxylic acids
  4. Which two fatty acids are essential to humans? Why?
    • Omega 3 (linolenic)
    • Omega 6 (linoleic)
    • They body cannot synthesize them, and the are used to distribute hormone-like substances that regulate body functions
  5. Hydrolyzed by water under certain conditions
    saponifiable
  6. A simple lipid derived from long-chain alcohols instead of glycerol
    wax
  7. simple lipids are made up of
    fatty acids + alcohol
  8. A triester of glycerol that is synthesized by dehydration
    triglyceride
  9. Olestra is a synthetic polyester of ___ and ___
    sucrose and fatty acids
  10. Complex lipids contain
    • glycerol
    • fatty acids
    • at least one other compound
  11. Phosphoglycerides contain
    • glycerol
    • fatty acids
    • phosphoric acid
    • an alcohol (usually choline, ethanolamine, serine)
  12. What type of glyceride is a major component of cell membranes?
    phosphoglycerides
  13. A phosphoglyceride containing choline that gives the structure of cell membranes, is an emulsifying agent, and gives a smooth texture to margarine and chocolate
    lecithin
  14. A phosphoglyceride containing ethanolamine or serine that is used in cell membranes, brain tissue, blood platelets and emulsifiers
    cephalin
  15. Sphingolipids are ____ lipids that contain ___ (4 things)
    • complex
    • sphingosine, fatty acid, phosphoric acid, alcohol
  16. a complex lipid containing a sphingosine, a fatty acid and a carbohydrate
    glycolipid (or cerebroside)
  17. complex lipids that do NOT contain esters that can react with water to hydrolyze
    non-saponifiable
  18. The most abundant and important steroid in humans
    cholesterol
  19. Do fatty acids usually have even or odd number of carbons?
    even
  20. LDL
    Low density lipoprotein (bad)
  21. HDL
    High density lipoprotein (good)
  22. VLDL
    very low density lipoprotein
  23. Is olestra saponifiable?
    no (undigestable)

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