Question

In polypeptide chain of amino acids the end terms are

• A. amino and serine
• B. arginine and carboxy
• C. glucine and valine
• D. amino and carboxy

Answer 1

The correct option is D amino and carboxy

In polypeptide chain of amino acids the end terms are amino and carboxy. The amino acids are linked covalently by peptide bonds. One end of every polypeptide, called the amino terminal or $N$-terminal, has a free amino group. The other end, with its free carboxyl group, is called the carboxyl terminal or $C$-terminal.