Lipids

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Author:
hoyadavis
ID:
22646
Filename:
Lipids
Updated:
2010-06-08 15:57:23
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lipids
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lipids
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  1. What are the five classes of lipids?
    Fatty acids
    eicosanoids
    glycerides
    phospholipids
    glycolipids
    steroids
    • Fatty acids
    • eicosanoids
    • glycerides
    • phospholipids
    • glycolipids
    • steroids
  2. Lipids are divided into three main groups
    • Simple
    • compound
    • derived
  3. General properties of lipids
    • are soluble in organic solvents such as alcohol, ether, acetone and carbon tetrachloride
    • contain carbon, hydrogen, oxygen and sometimes N or P
    • yield fatty acids upon hydrolysis or combine with an alcohol to form an ester
    • take part in plant and animal metabolism
  4. Simple lipids are
    esters of fatty acids.
  5. if a hydrolisis of a simple lipd yields a fatty acid and an alcohol glycerol, the lipid is called a
    Fat
  6. If a hydrolysis of a simple lipid yields a fatty acid and an alcohol other than glycerol the lipid is called a
    wax
  7. Both fats and waxes are regarded ___
    esters
  8. the legnth of fatty acids can range from __ to __ carbons
    10- 22
  9. formula to calculate number of H in a saturated fat
    2N + 1
  10. Fatty acids are organic acids because
    they contain a carboxyl group
  11. A triglyceride is made up of
    3 fatty acids and glycerol
  12. eicosenoids contain __ carbons and are derived ______ acid
    20; arachidonic
  13. Compound lipids are ___ glycerols that have ____ ____ attached to themselves in addition to fatty acids
    acyl; other molecules
  14. Two types of compound lipids are
    • phospholipds
    • glycolipids
  15. When hydrolized a phospholipid yields
    • fatty acids
    • glycerol
    • a nitrogen compound
    • a phosphate containing compound
  16. Phospholipids are ____ molecules with charge polar hydrophillic heads
    amphipathic
  17. Three types of phospholipids
    • choline phospholipids
    • amino phospholipids
    • sphingolipids
  18. this phospholipd predominates throughout the exterior portion of the lipid bilayer and is associated with regulation of lipid exchange across the membrane
    choline
  19. Lecithins particpate in
    lipid metabolism
  20. this phospholipids are predominantly found in the plasma membrane occupying the interior portion of the lipid bilayer
    amino
  21. Choline phospholipids are also called
    lecithins
  22. amino phospholipids are also called
    cephalins
  23. Sphingolipids are lipids containing
    an amino acid sphingosine instead of glycerol
  24. Compound lipid that have alcohol and fatty acid instead of phosphate group. Are cerimides of glycerides with one or more saccharides attached
  25. Glycolipids make up antigens that characterize
    specific cell types as A, B, AB, or O red blood cells
  26. The steroid nucleus is
    cholesterol
  27. all steroids in mammals synthesize into
    squalene
  28. The steroid nucleus cholesterol results from the ___ of the ___ ____ hyrdrocarbon ____
    cyclization; linear C30; squalene
  29. 2 isoprenes made ____ and three _____ make squalene
    terpene; terpene
  30. derived lipids are derived from?
    cholesterol

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