Biochemistry The rate-limiting step for norepinephrine synthesis A Conversion of phenylalanine to Tyrosine B Conversion of Tyrosine to DOPA C Conversion of DOPA to dopamine D Conversion of dopamine to norepinephrine 💡 Explanation The rate-limiting step for norepinephrine synthesis ✓ Correct Answer: B. Conversion of Tyrosine to DOPA