Which of the Following Is True About the Tertiary Structure

Multiple Choice

Which of the following is true about the tertiary structure of proteins?

A) Disulfide bonds are part of the tertiary structure.
B) Only proteins with more than one polypeptide subunit have a tertiary structure.
C) Proteins with tertiary structure do not contain α helix or β-pleated sheet.
D) Van der Waals interactions play no role in the tertiary structure.
E) Interactions between hydrophobic amino acid side chains are important for hold the tertiary structure together.