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NDA 1 2025 GAT, question 107

Topic: Biology

Q107

A chain of peptide containing linear sequences of amino acid linked by peptide bonds best represent the

  1. (a) Primary structureCorrect answer
  2. (b) Secondary structure
  3. (c) Tertiary structure
  4. (d) Quaternary structure

Solution.

Answer: (a) Primary structure

  1. The primary structure of a protein is its linear amino-acid sequence linked by peptide bonds.
  2. Secondary structure concerns local folding such as helices and sheets, tertiary structure the overall fold of one chain, and quaternary structure the association of multiple chains.