Amino acid used in the synthesis of purines: (A) Glycine, (B) Ornithine, (C) Alanine, (D) Threonine
Answer is A. Purine contains glycine at 7th position and amino gp of aspaate at 1st position. No other amino acids present.Ref: Textbook of biochemistry for medical students, seventh edition, page no: 563, fig: 43.10