This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Enzymes, Subject name: Biochemistry
[{'content': 'Enzyme deficient in alkaptonuria is \nSelect and explain. \nA. Homogentisic acid oxidase, B. Tyrosinase I, C. Tyrosinase II, D. Acid maltase', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. a (Homogentisic acid oxidase). (Ref. Harper, Biochemistry, 25th ed., 332)Disorders of amino acid and urea cycle metabolismAmino acid metabolism NameEnzyme deficiencyMetabolism affected1AlbinismTyrosinaseTyrosine2AlkaptonuriaHomogentisate oxidasePhenylalanine, tyrosine3CystathioninuriaCystathionine lyaseCysteine, methionine, serine4HistidinemiaHistidine ammonia lyaseHistidine5HomocystinuriaCysthionine sythaseCysteine, methionine, serine6Maple syrup urine diseaseBranched-chain keto acid dehydrogenaseValine, isoleucine, leucine7Phenylketonuria(PKU)Phenylanine hydroxylasePhenylalanine8TyrosinosisHydroxyphenylpyruvate hydroxylaseTyrosine transaminase Urea cycle1ArgininemiaArginase2ArgininosuccinaturiaArgininosuccinate lyase3CitrullinemiaArgininosuccinate synthetase4Hyperammonemia-IOrnithine transcarbamoylase5Hyperammonemia-llCarbamoyl-phosphate synthetase-l', 'role': 'assistant'}]