Protein and Nucleotide Metabolism Quiz
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Questions and Answers

Which enzymes are responsible for the conjugation of ubiquitin to target proteins?

  • Ubiquitin-activating enzymes (E1)
  • Ubiquitin-conjugating enzymes (E2)
  • Ubiquitin ligases (E3)
  • All of the above (correct)
  • What is the purpose of removing the α-amino group from amino acids?

  • To produce energy (correct)
  • To excrete it
  • To prevent oxidative breakdown
  • To incorporate it into other compounds
  • Which step is obligatory in the catabolism of all amino acids?

  • Conjugation of ubiquitin
  • Incorporation into other compounds
  • Metabolism of carbon skeletons
  • Removal of the α-amino group (correct)
  • What happens to the carbon skeletons of amino acids after the α-amino group is removed?

    <p>They are incorporated into other compounds</p> Signup and view all the answers

    Which chapters in the main textbook cover the metabolism of proteins and nucleotides?

    <p>Ch. 19 and Ch. 20</p> Signup and view all the answers

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