Catecholamine Biosynthesis Involves Dopamine (DA), Epinephrine (Epi), Norepinephrine (Norepi), and L-Dopa

question 6

Multiple Choice

Catecholamine biosynthesis involves dopamine (DA) , epinephrine (Epi) , norepinephrine (Norepi) , and L-dopa (DOPA) .In what sequence are these products formed?

• A)Epi → Norepi → DOPA → DA.
• B)DOPA → Epi → Norepi → DA.
• C)DOPA → DA → Norepi → Epi.
• D)DA → DOPA → Epi → Norepi.
• E)Epi → Norepi → DA → DOPA.

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