In a polypeptide, the carboxyl group of one amino acid is bound to the amino group of the next amino acid by .
A
peptide bond
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B
glycosidic bond
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C
disulfide bond
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D
H-bond
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Solution
The correct option is A peptide bond In a polypeptide, peptide bond is formed due to condensation reaction between carboxyl group of one amino acid and amino group of next amino acid with the elimination of water. Peptide bond stabilises the linear polypetide chain.