<prompt> Which of the following contains sulphur?CreatineInsulinInulinCreatinine  <response>: Ans: b Insulin Ref: Harper, 25th ed, p. 347,115Insulin is a polypeptide consisting of two chains linked by two inter chain di sulphide bridges.Amino acids required for special products: Creatine - glycine arginine methionine Glutathione - glycine cysteine glutamate Purine - glycine aspartate glutamine serine Pyramidine - aspartate glutamine glycine not present Keratin - formed by histidine, arginine, lysine. Also note - keratin is rich in cysteine. Histone - rich in arginine and histidine. Camosine - P alanine, histidine. Choline - glycine, serine, methionine Vit B6 - lipotrophic factor 