$β$ -pleated sheet structure of polypeptide contains:

intermolecular hydrogen bonds

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intramolecular hydrogen bonds

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both

A

and

B

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none of these

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Solution

The correct option is B intermolecular hydrogen bonds
Beta sheets consist of beta strands (also $β$ -strand) connected laterally by at least two or three backbone hydrogen bonds, forming a generally twisted, pleated sheet. A $β$ -strand is a stretch of polypeptide chain typically 3 to 10 amino acids long with backbone in an extended conformation.

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