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Biology · BIOMOLECULES

हिन्दी

The given diagrammatic representation illustrates various structural levels of proteins. Identify the structural level in which the long polypeptide chain is folded upon itself like a hollow woolen ball, which is absolutely necessary for the biological activities of proteins:

  1. Level (b) representing secondary structure
  2. Level (a) representing primary structure
  3. Level (c) representing tertiary structure
  4. Level (d) representing quaternary structure

Correct answer · Option 3

Level (c) representing tertiary structure

Explanation

The tertiary structure (represented by c) involves folding of the polypeptide chain upon itself like a hollow woolen ball, giving a 3-D conformation essential for biological activity.
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