<prompt> Urea,Creatine and Nitric oxide are synthesized from?AlanineArginineAspaateGlycine  <response>: 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 