Neuron Structure and Action Potential
Quiz
•
Biology
•
10th Grade - University
•
Practice Problem
•
Medium
Standards-aligned
Charles Martinez
Used 1+ times
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9 questions
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1.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
A typical neuron has a resting membrane potential of about:
+70 mV
+70 V
−70 mV
−70 V
All of the above are observed at rest
2.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
The following ion(s) is/are involved in the neuronal action potential:
Sodium (Na+) Potassium (K+)
Calcium (Ca2+)
Chloride (Cl−)
All of the above
Tags
NGSS.HS-PS2-5
3.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
At the peak of the action potential, the membrane potential is:
exactly at the Na+ equilibrium potential (VNa)
close to but more positive than the Na+ equilibrium potential (VNa)
close to but less positive than the Na+ equilibrium potential (VNa)
exactly at 0 mV
the same as the resting membrane potential (Vrest)
4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
At what membrane voltage do neuronal voltage-gated Na+ channels become activated?
−70
−50
0 mV
+50 mV
None of the above
5.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
At what membrane voltage do neuronal voltage-gated K+ channels become activated?
−70
−50
0 mV
+50 mV
None of the above
6.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
The spike phase of the neuronal action potential is due to:
the opening of voltage-gated Na+ channels
the opening of voltage-gated K+ channels
the closure of resting K+ channels
the opening of voltage-gated Cl− channels
None of the above
7.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
The hyperpolarization phase of the action potential is due to:
the opening of voltage-gated Cl− channels
the prolonged opening of voltage-gated K+ channels
the closure of resting Na+ channels
due to the closure of Cl− channels
None of the above
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