AIIMS 2019 Chemistry Proteins MCQ Question

In the primary structure of proteins, amino acids are interconnected by peptide bonds, which are formed through a dehydration synthesis reaction where the carboxyl group of one amino acid reacts with the amino group of another, releasing a molecule of H₂O. Option A is incorrect because hydrogen bonds primarily stabilize secondary and tertiary structures, not the primary sequence. Ionic bonds can occur between charged side chains but do not link amino acids in the primary structure, while glycosidic linkages are specific to carbohydrates and do not pertain to protein structure.