MDCAT Biology MCQ #753

A diagram illustrates a single polypeptide chain folding upon itself via disulfide and ionic bonds to form a complex globular shape. This represents:

MDCAT Biology MCQ #753

  1. Question 1

    Q1. A diagram illustrates a single polypeptide chain folding upon itself via disulfide and ionic bonds to form a complex globular shape. This represents:

    • A) Primary structure
    • B) Secondary structure
    • C) Tertiary structure
    • D) Quaternary structure

    Answer: Tertiary structure

    Explanation: Tertiary structure involves folding a single polypeptide into a globular shape. Quaternary structure is tempting but requires multiple polypeptide chains.