<prompt> Dietary essential amino acid-CysteineArginineMethionineSelenocysteine  <response>: Ans. is c i.e., MethionineNutritionally EssentialNutritionally NonessentialArginineAlanineHistidineAsparagineIsoleucineAsparatateLeucineCysteineLysineGlutamateMethionineGlutaminePhenylalanineGlycineThreonineProlineTryptophanSerineValineTyrosine 