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      Question

      A person with phenylketonuria cannot convert

      A phenylalanine to tyrosine Correct Answer Incorrect Answer
      B phenylalanine to isoleucine Correct Answer Incorrect Answer
      C phenol to ketone Correct Answer Incorrect Answer
      D phenylalanine to lysine Correct Answer Incorrect Answer

      Solution

      A person with phenylketonuria cannot convert phenylalanine to tyrosine. Phenylketonuria (PKU) is a genetic disorder characterized by a deficiency of the enzyme phenylalanine hydroxylase, which is responsible for converting phenylalanine to tyrosine in the body.

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