BIO 334 EXAM 1 STONY BROOK UNIVERSITY STUDY
GUIDE & PRACTICE QUESTIONS 2026/2027
ChAT - ANS✔✔ Enzyme that synthesizes ACh in the motor neuron terminal
AChE - ANS✔✔ An extracellular enzyme that degrades ACh at the synaptic cleft
Acetyl CoA + Choline - ANS✔✔ acetylcholine
ionotropic receptors - ANS✔✔ receptors that are coupled to ion channels and affect the neuron
by causing those channels to open
metabotropic receptors - ANS✔✔ receptors that are associated with signal proteins and G
proteins
Agonists - ANS✔✔ drugs which mimic the activity of neurotransmitters
Antagonists (drugs) - ANS✔✔ These drugs block the actions of neurotransmitters
nicotinic receptors - ANS✔✔ cholinergic receptors that also respond to stimulation by nicotine,
they are pentamers and have 2 binding sites, allow influx of sodium and efflux of potassium
During ACh release... - ANS✔✔ there is more sodium influx when compared to potassium efflux.
muscarinic receptors - ANS✔✔ ACh in synapse of parasympathetic nervous system
M1-M5
GUIDE & PRACTICE QUESTIONS 2026/2027
ChAT - ANS✔✔ Enzyme that synthesizes ACh in the motor neuron terminal
AChE - ANS✔✔ An extracellular enzyme that degrades ACh at the synaptic cleft
Acetyl CoA + Choline - ANS✔✔ acetylcholine
ionotropic receptors - ANS✔✔ receptors that are coupled to ion channels and affect the neuron
by causing those channels to open
metabotropic receptors - ANS✔✔ receptors that are associated with signal proteins and G
proteins
Agonists - ANS✔✔ drugs which mimic the activity of neurotransmitters
Antagonists (drugs) - ANS✔✔ These drugs block the actions of neurotransmitters
nicotinic receptors - ANS✔✔ cholinergic receptors that also respond to stimulation by nicotine,
they are pentamers and have 2 binding sites, allow influx of sodium and efflux of potassium
During ACh release... - ANS✔✔ there is more sodium influx when compared to potassium efflux.
muscarinic receptors - ANS✔✔ ACh in synapse of parasympathetic nervous system
M1-M5