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Question

Hollow woolen ball is _________ structure of protein


  1. Primary

  2. Secondary

  3. Tertiary

  4. Quaternary


Solution

The correct option is C

Tertiary


Proteins have three structural levels - primary, secondary, tertiary and quaternary.

The sequence of amino acids in polypeptide chain gives the primary structure of a protein. When the polypeptide chain is coiled or folded in a regular fashion, it gives the secondary structure of the protein. The long protein chain is also folded upon itself like a hollow woolen ball, giving rise to the tertiary structure.

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