Which enzyme defect causes phenylketonuria?: (A) Phenylalanine oxidase, (B) Phenylalanine hydroxylase, (C) Tyrosinase, (D) Tyrosine transaminase
Answer is B. Ans. is 'b' i.e., Phenylalanine hydroxylaseMetabolic diseaseEnzyme deficientMaple syrup urine diseaseBranched chain ketoacid dehydrogenaseMethyl-melonic aciduriaMethyl-malonyl CoA mutase (isomerase)Sweaty feet odor in bodyIsovaleryl-CoA dehydrogenaseTyrosinemia I (Tyrosinosis)Fumarylacetoacetate hydroxylaseTyrosinemia IITyrosine transaminase (Tyrosine aminotransferase)Neonatal tyrosinemiaHydroxyphenyl pyruvate hydroxylaseAlbinismTyrosinaseAlkaptonuriaHomogentisate oxidasePhenylketonuriaPhenylalanine hydroxylaseOrotic aciduriaOMP decarboxylaseHomocystinuriaCystathionine synthataseLesh-Nyhan syndromeComplete deficiency of enzyme HGPRTCystinosisCystine reductase