Biochemistry Which of the following is the ratelimiting enzyme in the biosynthesis of catecholamines? A Dopamine hydroxylase B Tyrosinase C DOPA decarboxylase D Tyrosine hydroxylase 💡 Explanation Which of the following is the ratelimiting enzyme in the biosynthesis of catecholamines? ✓ Correct Answer: D. Tyrosine hydroxylase