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Practice: Proteins

Which of the following best explains the role of hydrogen bonds in protein structure?

  • AHydrogen bonds form within amino acids to join the carboxyl group to the amino group.
  • BHydrogen bonds form between amino acids to hold them in a polypeptide chain.
  • CHydrogen bonds form between amino acids and water molecules to contribute to the quaternary structure of the protein.
  • DHydrogen bonds form between amino acids to hold the protein in its secondary-structure shape (e.g., alpha-helix).

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