TLS Online TPP Program

#Question id: 28983


Which of the following is the rate limiting step in synthesis of catecholamines?

#Unit 7. System Physiology – Animal
  1. conversion of dihydroxyphenylalanine to Dopamine by Dopa decarboxylase 
  2. conversion of phenylalanine to tyrosine by  phenylalanine hydroxylase
  3. Conversion of tyrosine to dihydroxyphenylalanine (DOPA) by tyrosine hydroxylase
  4. Conversion of tyrosine to dopamine by Dopa decarboxylase