Alkaptonuria an inherited metabolic disorder is due to the deficiency of____________?
Correct answer: D. Homogentisate oxidase
- A. Tyrosine transaminase
- B. Cystathionase
- C. Pheylalanine hydroxylase
- D. Homogentisate oxidase
Explanation
Alkaptonuria results from deficiency of homogentisate oxidase in tyrosine degradation, causing homogentisic acid to accumulate and darken urine. Phenylalanine hydroxylase deficiency causes phenylketonuria instead.
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