
Understanding Action Potentials
Interactive Video
•
Biology
•
9th - 10th Grade
•
Practice Problem
•
Hard
Jennifer Brown
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the resting membrane potential of a neuron?
Negative 93 millivolts
Positive 70 millivolts
Zero millivolts
Negative 70 millivolts
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which part of the neuron is primarily involved in the initiation of an action potential?
Cell body
Axon hillock
Dendrites
Axon terminals
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens when the voltage-gated sodium channels open during depolarization?
Sodium ions leave the cell
Potassium ions enter the cell
Sodium ions enter the cell
Potassium ions leave the cell
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the equilibrium potential for sodium during depolarization?
Negative 70 millivolts
Zero millivolts
Positive 58 millivolts
Negative 93 millivolts
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
During repolarization, which ions move out of the neuron?
Calcium ions
Potassium ions
Chloride ions
Sodium ions
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the term for when the membrane potential becomes more negative than the resting potential?
Hyperpolarization
Repolarization
Equilibrium
Depolarization
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What prevents the membrane potential from reaching the equilibrium potential of potassium?
Sodium channels closing
Potassium channels closing
Chloride channels opening
Calcium channels opening
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