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Biochemistry Proteins and Amino Acids f8897ef8

Which enzyme defect causes phenylketonuria?

A
Phenylalanine oxidase
B
Phenylalanine hydroxylase
C
Tyrosinase
D
Tyrosine transaminase
High-Yield Explanation
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

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