What is a common precursor of all catecholamines?

Glutamate is

Which of the following is not a glutamate receptor subtype?

The nerve gas sarin leads to muscular paralysis by stimulating (increasing the activity of) the enzyme acetylcholinesterase.

Which molecule binds NMDA receptors and prevents the flow of ions at resting and hyperpolarized membrane potentials?

To which category of neurotransmitters does acetylcholine belong?

G-protein coupled receptors: A large family of neurotransmitter or hormone receptors, characterized by 3 transmembrane domains; the binding of these receptors by agonists leads to the activation of intracellular G-proteins.

Which neurotransmitter is released at the majority of brain synapses, making it the most abundant neurotransmitter in the nervous system?

Total Magnification 400x How big is this cell?

Total Magnification 400x Name this organism