-In Figure 8.1, if the presynaptic neuron is adrenergic, what is the structure in Step 6?
A) monoamine oxidase or catechol -O -methyltransferase
B) choline acetyl transferase
C) phosphodiesterase
D) dopa decarboxylase
E) acetylcholinesterase

Question

-In Figure 8.1, if the presynaptic neuron is adrenergic, what is the structure in Step 6?
A) monoamine oxidase or catechol -O -methyltransferase 
B) choline acetyl transferase 
C) phosphodiesterase 
D) dopa decarboxylase 
E) acetylcholinesterase

Quizplus · Accepted Answer

Monoamine oxidase (MAO) or catechol-O-methyltransferase (COMT) are enzymes involved in the breakdown of monoamine neurotransmitters, which include the catecholamines released by adrenergic neurons.