MDCAT Biology MCQ #815

The alpha-helix and beta-pleated sheets are common motifs in proteins. Which specific bond is exclusively responsible for maintaining these secondary structural patterns?

MDCAT Biology MCQ #815

  1. Question 1

    Q1. The alpha-helix and beta-pleated sheets are common motifs in proteins. Which specific bond is exclusively responsible for maintaining these secondary structural patterns?

    • A) Disulfide bridges
    • B) Hydrogen bonds
    • C) Ionic bonds
    • D) Hydrophobic interactions

    Answer: Hydrogen bonds

    Explanation: Secondary structure is maintained by hydrogen bonds between the amino and carboxyl groups of the backbone. Disulfide bridges stabilize tertiary and quaternary structures.