Question

how many peptide bonds are in the polypeptide shown below? 2 3 6 8 9

Explanation:

Step1: Identify peptide - bond structure

A peptide bond is formed between the carboxyl group ($-COOH$) of one amino - acid and the amino group ($-NH_2$) of another amino - acid, with the general structure $-CO - NH-$.

Step2: Count peptide bonds in the polypeptide

In the given polypeptide, we can see two $-CO - NH-$ bonds.

Answer:

2