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Fatty Acid Oxidation Practice 1 quiz

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  • What molecule does glycerol enter metabolism as during fatty acid catabolism?
    Glycerol enters metabolism as dihydroxyacetone phosphate (DHAP).
  • What is DHAP converted into during fatty acid catabolism?
    DHAP is converted into glyceraldehyde 3-phosphate (G3P).
  • What is the role of carnitine in fatty acid catabolism?
    Carnitine is essential for transporting fatty acids into the mitochondrial matrix.
  • What enzyme catalyzes the combination of fatty acid and carnitine?
    Carnityl Acetyltransferase 1 catalyzes the combination of fatty acid and carnitine.
  • What type of transport mechanism does the carnitine shuttle use?
    The carnitine shuttle uses an antiport mechanism.
  • What happens to carnitine after fatty acyl-CoA enters the mitochondrial matrix?
    Carnitine is removed from fatty acyl-CoA and exported back out to bring in another fatty acyl attached to carnitine.
  • What is the first enzyme in the beta-oxidation pathway?
    The first enzyme is acyl-CoA dehydrogenase.
  • What does acyl-CoA dehydrogenase produce during beta-oxidation?
    Acyl-CoA dehydrogenase produces FADH2.
  • Which enzyme acts after acyl-CoA dehydrogenase in beta-oxidation?
    Enoyl-CoA hydratase acts after acyl-CoA dehydrogenase.
  • What is produced by enoyl-CoA hydratase during beta-oxidation?
    Enoyl-CoA hydratase produces an alcohol group.
  • Which enzyme oxidizes the alcohol group in beta-oxidation?
    Beta-hydroxyacyl-CoA dehydrogenase oxidizes the alcohol group.
  • What does beta-hydroxyacyl-CoA dehydrogenase generate?
    Beta-hydroxyacyl-CoA dehydrogenase generates NADH.
  • What is the final enzyme in the beta-oxidation pathway?
    The final enzyme is thiolase.
  • How many ATP are produced from the complete oxidation of palmitic acid?
    Complete oxidation of palmitic acid produces 108 ATP.
  • How does the presence of one double bond in palmitoleic acid affect ATP yield compared to palmitic acid?
    One double bond in palmitoleic acid results in the production of one less FADH2, yielding about 106 ATP instead of 108.