009 Depolarization: Phase 1 of the Action Potential

Interactive Video
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Biology, Chemistry, Science
•
University
•
Hard
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the action potential simulator represent in the video?
The movement of potassium ions
The function of neurotransmitters
The process of depolarization
The resting state of a neuron
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why do sodium ions want to enter the cell?
To make the membrane potential more negative
To reach the Donnan equilibrium potential
To decrease the cell's energy consumption
To increase the concentration of potassium inside the cell
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the resting membrane potential range mentioned in the video?
-10 to -30 millivolts
+50 to +70 millivolts
0 to +30 millivolts
-50 to -70 millivolts
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What triggers the opening of voltage-gated sodium channels?
A stimulus causing the membrane potential to reach threshold
A decrease in membrane potential to -100 millivolts
An increase in internal potassium concentration
A decrease in external sodium concentration
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to the membrane potential during depolarization?
It becomes more positive
It becomes more negative
It fluctuates randomly
It remains unchanged
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