The biochemical defect in phenylketonuria (PKU) is a deficiency of the liver enzyme phenylalanine hydroxylase, which catalyzes the para-hydroxylation of phenylalanine to yield which amino acid?

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Multiple Choice

The biochemical defect in phenylketonuria (PKU) is a deficiency of the liver enzyme phenylalanine hydroxylase, which catalyzes the para-hydroxylation of phenylalanine to yield which amino acid?

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