
Neuronal Function and Ion Channels

Interactive Video
•
Biology, Science
•
10th - 12th Grade
•
Easy

Aiden Montgomery
Used 2+ times
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which part of the neuron is responsible for receiving information?
Axon terminal
Cell body
Dendrites
Axon
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the resting membrane potential of a typical neuron?
-55 millivolts
0 millivolts
30 millivolts
-70 millivolts
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What creates the electrochemical gradient across the neuronal membrane?
Electrical impulses
Presence of neurotransmitters
Distribution of ions
Movement of water molecules
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which type of ion channel opens in response to a change in membrane potential?
Ligand-gated ion channels
Mechanically-gated ion channels
Voltage-gated ion channels
Always open ion channels
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary function of the sodium-potassium pump?
To open ion channels
To release neurotransmitters
To transport ions against their concentration gradient
To generate action potentials
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens during depolarization of a neuron?
The membrane potential becomes less negative and more positive
The potassium channels close
The membrane potential becomes more negative
The sodium channels close
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
During which period can a neuron not fire another action potential, no matter the stimulus strength?
Relative refractory period
Absolute refractory period
Resting period
Depolarization period
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