Question

Number of peptide bonds fomed by two amino acids is

• A. $1$
• B. $2$
• C. $3$
• D. $4$

Answer 1

The correct option is A $1$

Number of peptide bonds = Number of amino acids$-1$
For example, when glycine and alanine, the two amino acids forms a dipeptide (called glycylalanine), have only one peptide bond in between them which is formed by $COOH$ group of glycine and $N{H}_2$ group of alanine as shown below:
Hence, (b) is correct.