Neuron Structure and Action Potential

Neuron Structure and Action Potential

10th Grade - University

9 Qs

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Neuron Structure and Action Potential

Neuron Structure and Action Potential

Assessment

Quiz

Biology

10th Grade - University

Practice Problem

Medium

NGSS
HS-PS2-5

Standards-aligned

Created by

Charles Martinez

Used 1+ times

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9 questions

Show all answers

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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