Question

Which of the two groups of the given formula is involved in peptide bond formation between different amino acids?

• A. 2 and 3
• B. 1 and 3
• C. 1 and 4
• D. 2 and 4

Answer 1

The correct option is B 1 and 3

Proteins are polymers of different amino acids, which are linked by peptide (CONH) bond formed by dehydration (polymerisation) between COOH group of one amino acid and $N{H}_2$ group of next amino acid with the removal of $H_{2}O$.

So, the correct answer is '1 and 3'.