MDCAT Chemistry MCQ #4889

The alpha-helix of a protein is maintained by specific interactions between the backbone atoms. Identify the force responsible for this secondary structure.

MDCAT Chemistry MCQ #4889

  1. Question 1

    Q1. The alpha-helix of a protein is maintained by specific interactions between the backbone atoms. Identify the force responsible for this secondary structure.

    • A) Ionic bonds
    • B) Peptide bonds
    • C) Hydrogen bonds
    • D) Disulfide bridges

    Answer: Hydrogen bonds

    Explanation: Secondary protein structures like alpha-helices are stabilized by hydrogen bonding between N-H and C=O groups. Peptide bonds are tempting but form primary structures.