Chemistry set 36


Q.1 The ―NH―CO is called:
A) Amide group
C) Protein linkage
B) Amino group
D) Peptide linkage
Q.3 Which of the following has an amino R-group?
A) Lysine C) Valine
B) Proline D) Alanine
Q.4 At intermediate value of pH, amino acids form Zwitter ions containing:
A) ―N+H3 and COO― C) ―N+H3 and COOH
B) ―NH
3 and COO― D) ―NH3 and COOH
Q.5 A polymer in which the number of amino acid residue is greater than 100 or molecular mass is
greater than 1000, is known as:
A) Protein C) Dipeptide
B) Polypeptide D) Tripeptide

Q.7 Organic compound containing both amine and carboxyl group is known as
A) Amino acid C) Saccharide
B) Fatty acid D) Amide