Porphyrins and Nucleic Acid Metabolism Quiz
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Questions and Answers

Where does heme biosynthesis take place?

  • Mature red blood cells
  • Hepatocytes
  • Erythrocyte-producing cells in the bone marrow (correct)
  • Spleen

    • Which type of porphyrins are normally important for humans?

  • Type IV
  • Type I
  • Type III (correct)
  • Type II

    • Which metal ions readily bind to porphyrins?

  • Copper and zinc ions
  • Ferrous and ferric ions (correct)
  • Calcium and magnesium ions
  • Sodium and potassium ions

    • Which side chains are present in Protoporphyrin IX?

    <p>Methyl, Vinyl, and Propionate</p> Signup and view all the answers

    What percentage of heme proteins is synthesized by hepatocytes?

    <p>15%</p> Signup and view all the answers

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