Quiz 15 Lipids

Karen Timberlake, Chemistry, Los Angeles Valley College

Answer the questions below and then click "submit" to send your answers.

  1. The class of lipids that does not contain fatty acids is

    2. Your answer:
    triglycerides
    steroids
    phospholipids
    waxes

  2. The common name of the fatty acid CH3(CH2)16COOH is

    3. Your answer:
    linolenic acid
    oleic acid
    palmitic acid
    stearic acid

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  3. The fatty acid known as oleic acid

    4. Your answer:
    has cis double bonds
    is liquid at room temperature
    can be hydrogenated
    all of the above

  4. Phospholipids contain

    5. Your answer:
    glycerol and fatty acids
    amino alcohol
    phosphate
    all of the above

  5. The complete hydrogenation of glyceryl trioleate will produce

    6. Your answer:
    glyceryl tristearate
    glycerol and 3 oleic acids
    CO2 and water
    soap

  6. A monounsaturated fatty acid contains

    7. Your answer:
    two double bonds
    three double bonds
    one double bond
    all single bonds

  7. The reaction of glyceryl tripalmitate to produce glycerol and three palmitic acids is

    8. Your answer:
    acid hydrolysis
    saponification
    base hydrolysis
    esterification

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  8. The structure pictured above is a

    9. Your answer:
    phospholipid
    triglyceride
    fatty acid
    steroid

  9. The high density lipoproteins (HDLs) found in blood plasma

    10. Your answer:
    are fat-soluble vitamins
    carry cholesterol from tissues to the liver to be excreted
    carry cholesterol to the tissues for the synthesis of cell membranes
    have a low density compared to other plasma lipoprteins

  10. The fat-soluble vitamins include

    11. Your answer:
    A
    D
    E
    all of the above

  11. The bile salts with a nonpolar steroid nucleus and a polar end help the body to

    12. Your answer:
    increase the absorption of calcium from the intestinal tract
    break apart and emulsify fat globules
    act as hormones
    break down proteins

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  12. This compound is a

    13. Your answer:
    triglyceride
    phospholipid
    wax
    steroid

  13. A plasma or cell membrane

    14. Your answer:
    contains a lipid bilayer of phosphospholipids
    contains cholesterol and proteins
    regulates the substances that pass into and out of the cell
    all of the above

  14. Glycolipids, which are abundant in the brain and the myelin sheaths of nerves, contain

    15. Your answer:
    sphingosine + a fatty acids + phosphate + choline
    gycerol + three fatty acids
    glycerol + two fatty acids + phosphate + choline
    glycerol + two fatty acids + a monosaccharide.

  15. When glyceryl tripalmitate reacts with NaOH, the products are glycerol and

    16. Your answer:
    3 fatty acids
    soaps
    detergents
    all of the above

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