I need help with a quesiton!!!!

  1. The question is from AP and I am lost. I have read and read but none of the answers seem right. Then agian I have been looking at the book all day. LOL

    Cholesterol is an example of a

    a. Review Organic Compounds
    b. prostaglandin
    c. fatty acid
    d. glycolipid

    HELP!!!! LOL TIA!!
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  2. 8 Comments

  3. by   jessjoy
    If I am not mistaken it is a glycolipid. It's the lipid part of the glycolipid bilayer in the cell membrane. Of course I am just going on straight memory here....I hope it's right. Good luck.
  4. by   MRed94
    Everything that I looked at voted for it being a fatty acid. Here is one of the sources I used.

    http://heartdisease.about.com/librar...ms=fatty+acids

    Good luck!

    Marla

    Try the Hole's A & P site, here:

    http://www.mhhe.com/biosci/ap/holeha...olc2/index.htm
  5. by   NRSKarenRN
    Cholesterol is a soft, waxy substance found among the lipids (fats) in the bloodstream and in all your body's cells. It's an important part of a healthy body because it's used to form cell membranes, some hormones and other needed tissues.

    Fatty acids are intermediates in the synthesis of other important compounds.

    Glycolipid
    A molecule composed of sugar and fat that forms an important component of cell membranes


    Answer=D Glycolipid

    Try a google search for answers...type in "what is..."
    i've been amazed that i can weed out stuff this way when my head is full. Very fast , took less than five min to find above(confirm my thought that D is answer).
  6. by   mattcastens
    Steroids

    The structure of steroid molecules is quite different from that of triglycerides or phospholipids, and yet steroids are still included in the lipid category of molecules because they are nonpolar and insoluble in water....

    Cholesterol is an important molecule in the body because it serves as the precursor (parent molecule) for the steroid hormones produced by the gonads and the adrenal cortex. [p. 37]

    Cholesterol and Plasma Lipoproteins

    Lipids, including cholesterol, are carried in the blood attatched to protein carriers.... Cholesterol is carried to the arteries by plasma proteins called low-density lipoproteins. These particles, produced by the liver, consist of a core of cholesterol surrounded by a layer of phospholipids and a protein.
    [p. 373]

    [Fox, Stuart Ira. Human Physiology. 5th ed. Dubuque, Iowa: Wm. C. Brown Publishers; 1996]

    Essentially, the answer to your answer is "D" -- glycolipid.
  7. by   Ortho_RN
    I agree with NRSKarenRN.... D
  8. by   wannanurse
    My mind is in overload. UGH. I will give google a try next time. I did not even think of that. LOL Thanks!!!
  9. by   StudentSandra
    originally posted by wannanurse
    the question is from ap and i am lost. i have read and read but none of the answers seem right. then agian i have been looking at the book all day. lol

    cholesterol is an example of a

    a. review organic compounds
    b. prostaglandin
    c. fatty acid
    d. glycolipid

    help!!!! lol tia!!
    i'm pretty sure it is not a prostaglandin. a prostaglandin is a fatty acid.

    it is an organic compound, but i'm not sure what is meant by answer "a".

    it is a lipid - subgroup steriod.

    the "lipids" include:
    fats - made of 3 fatty acids & glycerol
    phospholipids - 2 fatty acids & glycerol
    steriods - lipids with a 4 ring structure
    but it doesn't mention the glycerol with the steriods, only that cholestrol is insoluble in water & is found in the cell membranes of animal cells.

    so after looking in my a&p & micro book i'm now confused as well. i don't have a chemistry book, but that would be my next place to look.

    good luck
    Last edit by StudentSandra on Jan 20, '02
  10. by   wannanurse
    I did know I was going to have to be a chemisty to get through AP I. LOL These questions are tough. I have got another one I am trying to figure out. LOL

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