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  4. Assertion: The long protein chain is folded upon itself like a hollow ball giving rise to the tertiary structure. Reason: Tertiary structure gives a 3-dimensional view of a protein.

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Q. Assertion : The long protein chain is folded upon itself like a hollow ball giving rise to the tertiary structure.
Reason : Tertiary structure gives a 3-dimensional view of a protein.

Biomolecules

Solution:

The primary structure of protein is the sequence of amino acids in a chain, i.e., the positional information in a protein. In the secondary structure protein thread is folded in the form of a helix or in the sheet form. The long protein chain is also folded upon itself like a hollow woollen ball, giving rise to the tertiary structure. This gives us a 3-dimensional view of a protein. Tertiary structure is absolutely necessary for many biological activities of proteins.