What is the primary role of G proteins in the nervous system?
Neuron Biosignaling

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
To release calcium ions
To store neurotransmitters
To control adrenergic receptors
To generate action potentials
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What triggers the opening of voltage-gated sodium channels during an action potential?
Release of calcium ions
Increase in sodium concentration
Decrease in potassium concentration
Binding of neurotransmitters
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do voltage-gated calcium channels contribute to neurotransmitter release?
By facilitating vesicle fusion with the membrane
By opening sodium channels
By binding to neurotransmitters
By depolarizing the axon
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which structure is responsible for the release of neurotransmitters into the synapse?
Dendrite
Terminal end bulb
Axon hillock
Myelin sheath
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which neurotransmitter is associated with depolarization through NMDA receptors?
Glutamate
Dopamine
GABA
Serotonin
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What determines the type of ion that moves through a membrane in response to a neurotransmitter?
The presence of calcium ions
The concentration of ions
The type of neurotransmitter
The identity of the receptor
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which neurotransmitter is known for its hyperpolarizing effect?
Acetylcholine
GABA
Epinephrine
Glutamate
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