What type of covalent chemical bond links adjacent amino acid residues in the primary structure of a protein?
Answer and explanation
Correct answer: C. Peptide bond
- Step 1: Amino acids polymerize by condensation reactions between the alpha-carboxyl of one residue and alpha-amino of another. Step 2. Water is eliminated, forming a planar, resonance-stabilized amide linkage known as a peptide bond (-CO-NH-). Answer: Peptide bond (amide linkage -CO-NH-). Why not the others: Glycosidic bond links carbohydrates; Phosphodiester bond links nucleotides in DNA/RNA; Ester bond links fatty acids to glycerol.
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