Study

Phospholipids

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  • Which of the following best defines phospholipids?
    Lipids containing phosphorus
    Lipids containing nitrogen
    Lipids containing sulfur
    Lipids without fatty acids
  • Phospholipids act as good emulsification agents because they are:
    Neutral molecules
    Fully hydrophobic
    Fully hydrophilic
    Amphipathic (have both polar and nonpolar parts)
  • Upon hydrolysis, sphingomyelin yields all of the following except:
    Glycerol
    Phosphoric acid
    Choline
    Fatty acids
  • Lecithin differs from cephalin mainly in:
    Type of phosphate group
    Presence of sphingosine
    Type of fatty acid
    Type of nitrogen base
  • In lecithin, the nitrogen compound attached to phosphatidic acid is:
    Ethanolamine
    Choline
    Sphingosine
    Serine
  • Cephalins are phospholipids that contain either:
    Tyrosine or tryptophan
    Choline or sphingosine
    Ethanolamine or serine
    Glycerol or cholesterol
  • The most common type of phospholipid in cell membranes is:
    Phosphatidylcholine (Lecithin)
    Triglyceride
    Cholesterol
    Sphingomyelin
  • Sphingomyelin differs from phosphoglycerides because it:
    Contains sugar groups
    Contains glycerol instead of sphingosine
    Lacks fatty acids
    Contains sphingosine instead of glycerol
  • the choline obtained from lecithins is considered:
    Compound Lipid
    Not classified as lipid
    Simple Lipid
    Derived Lipid
  • Which of the following is not a nitrogen base found in phospholipids?
    Choline
    Serine
    Ethanolamine
    Glycerol