
Neuronal Action Potentials and Ion Channels
Interactive Video
•
Biology, Science
•
9th - 12th Grade
•
Hard

Emma Peterson
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary function of the sodium-potassium pump in neurons?
To maintain the potential difference across the cell membrane
To facilitate cell division
To produce neurotransmitters
To generate electrical signals
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does the sodium-potassium pump contribute to the resting potential of a neuron?
By stopping all ion movement
By equalizing the concentration of ions inside and outside the cell
By maintaining a higher concentration of sodium outside the cell
By allowing sodium ions to enter freely
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is NOT a characteristic of electrotonic potential?
Involves no energy consumption
Dissipates with distance
Effective over long distances
Fast signal transmission
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens when a sodium ion gate opens in a neuron?
Potassium ions flood out
Sodium ions flood in
The cell stops transmitting signals
The cell becomes more negative
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main disadvantage of electrotonic potentials?
They dissipate over long distances
They require a lot of energy
They cannot be measured
They are too slow
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What triggers the opening of a sodium gate during an action potential?
A specific voltage threshold
A decrease in potassium concentration
A change in temperature
The presence of neurotransmitters
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why are action potentials considered effective for long-distance signal transmission?
They are faster than electrotonic potentials
They do not dissipate over distance
They occur only in short bursts
They require no energy
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