MDCAT Biology MCQ #953

The alpha-helix is a common motif in proteins. Which type of bonding is responsible for maintaining this secondary structure specifically?

MDCAT Biology MCQ #953

  1. Question 1

    Q1. The alpha-helix is a common motif in proteins. Which type of bonding is responsible for maintaining this secondary structure specifically?

    • A) Covalent disulfide bridges between cysteine residues
    • B) Ionic interactions between R-groups
    • C) Hydrogen bonding between the backbone atoms
    • D) Hydrophobic interactions within the core

    Answer: Hydrogen bonding between the backbone atoms

    Explanation: Secondary structure is maintained by hydrogen bonds between amino and carboxyl groups. Primary structure relies on covalent peptide bonds.