Question 01: In classical PKU: |
|---|
| Phenylalanine dehydrogenase is deficient |
| The biochemical deficiency in PKU interferes with the conversion of phenylalanine to tyrosine |
| The co-factor tetrahydrobiopterin is deficient |
| Phenylalanine hydroxylase is not deficient |
| Check answer |
ExplanationThe enzyme phenylalanine hydroxylase, which converts phenylalanine to tyrosine is deficient in classical PKU. The co-factor tetrahydrobiopterin is not deficient in classical PKU. There is no enzyme called phenylalanine dehydrogenase. |