
Neuronal Function and Action Potentials
Interactive Video
•
Biology
•
9th - 10th Grade
•
Hard

Lucas Foster
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the typical internal charge of a neuron?
Positive
Negative
Variable
Neutral
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
At what charge do sodium channels typically open during an action potential?
50 mV
-40 mV
0 mV
-70 mV
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to the charge inside a neuron when sodium ions enter?
It becomes neutral
It remains unchanged
It becomes more positive
It becomes more negative
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of potassium channels during an action potential?
To allow sodium ions to enter
To block sodium ions
To allow potassium ions to exit
To maintain a constant charge
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What triggers the opening of potassium channels during an action potential?
A negative internal charge
A positive internal charge
A decrease in external sodium
The presence of neurotransmitters
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the result of potassium ions exiting the neuron?
The internal charge becomes more positive
The neuron releases neurotransmitters
The internal charge becomes more negative
The neuron becomes inactive
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main purpose of the sodium-potassium pump?
To generate energy
To block neurotransmitter release
To restore the resting potential
To initiate an action potential
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