Action Potential
Interactive Video
•
Biology
•
12th Grade
•
Medium
Russell Dalay
Used 6+ times
FREE Resource
7 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the resting membrane potential of a neuron typically?
0 millivolts
+70 millivolts
-55 millivolts
-70 millivolts
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What causes the neuron to depolarize?
Closing of potassium channels
Stimulus from the nuerotransmitter
Loss of potassium ions
Loss of sodium ions
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
At what membrane potential does a neuron typically reach its threshold?
0 mV
+55 mV
-55 mV
-70 mV
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the threshold?
At a certain charge, the Sodium-Potassum Channels open, allowing Sodium to flood in
The point where the cell is too charged that it cuases damage
At a certain charge, the Sodium-Potassum Channels open, allowing Potassium to flood in
At a certain charge, the Sodium-Potassum Channels puases to rest.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens during the rising phase of the action potential?
Neuron returns to resting membrane potential
Sodium ions enter the cell, causing depolarization
Sodium channels close
Potassium ions flow out of the cell
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What cuases the cell membranes to repolarize? [Efflux= movement out of the cell]
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the refractory period?
The peak of the action potential
The initial depolarization phase
When neurotransmitters are released
When the neuron is hyperpolarized and difficult to activate
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