Question

Which one of the following neurotransmitters works as an adjunctive neurotransmitter for glutamate as well as an independent neurotransmitter with its own receptors?

A. GABA
B. Norepinephrine
C. Serotonin
D. Dopamine
E. Glycine

Answer 1

Glycine is the neurotransmitter that both supports glutamate as an adjunctive neurotransmitter and acts independently with its own receptors.

Step-by-step explanation:

The neurotransmitter that works as both an adjunctive neurotransmitter for glutamate and an independent neurotransmitter with its own receptors is Glycine (E). Glycine acts as an inhibitory neurotransmitter in its independent functioning, similar to GABA, but it can also modulate glutamatergic neurotransmission by co-activating NMDA receptors alongside glutamate. This means that while Glycine primarily operates within its own glycinergic system, it also plays a supportive role in the glutamatergic system, making it unique among the options listed.