Epinephrine is synthesized from norepinephrine by: (A) Hydroxylation, (B) N-methylation, (C) Deamination, (D) Carboxylation
Answer is B. Norepinephrine can be conveed into epinephrine by the enzyme phenylethanolamine N-methyltransferase with S-adenosyl-L-methionine as cofactor.