This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Structure and function of protein, Subject name: Biochemistry
[{'content': 'Disulphide bond is seen between \nSelect and explain. \nA. Arginine and histidine, B. Arginine and cysteine, C. Cysteine and cysteine, D. Lysine and cysteine', 'role': 'user'}, {'content': 'Answer: C \nExplanation: 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', 'role': 'assistant'}]