Urea,Creatine and Nitric oxide are synthesized from?: (A) Alanine, (B) Arginine, (C) Aspaate, (D) Glycine
Answer is B. AMINO ACID DERIVED PRODUCTS Phenyl alanine Tyrosine->Melanin,Dopa,Dopamine,Norepinephrine,Epinephrine Tryptophan Niacin,Seratonin->Melatonin Histidine Carnosine,Histamine,Anserine Glycine Heme Glutamate GABA,Glutathione Arginine Urea,creatine,Nitric oxide Serine Ethanolamine,choline Lysine cadaverine Reference: Harpers illustrated biochemistry 30th edition