Covalent bond is seen in: (A) Hydrogen bond, (B) Disulphide bond, (C) Electrostatic bond, (D) Ionic bond
Answer is B. Disulphide bonds: These are formed between two cysteine residues. They are strong, high energy covalent bonds.Ref: Textbook of medical biochemistry, MN Chatterji, 8th edition, page no: 89