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The Three-Dimensional Structure of Proteins

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  • 1. Multiple Choice
    30 seconds
    5 pts

    Which item is the predominant factor in protein stability?

    disulfide bonds

    the hydrophobic effect

    salt bridges

    nonpeptide covalent bonds

  • 2. Multiple Choice
    30 seconds
    5 pts

    Which statement regarding protein structure is true?

    Entropy is generally not a consideration when

         determining stability.

    Van der Waals interactions are insignificant.

    Hydrophilic side chains are never found in the interior.

    Hydrophobic side chains are usually in the interior of

    the native structure.

  • 3. Multiple Choice
    30 seconds
    5 pts

    The α helix is:

    affected by the identities of the residues near each end.

    stabilized by amino acid R-group interactions.

    a left-handed helix with 3.6 amino acids per turn.

    stabilized primarily by the hydrophobic effect.

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