Exploring Neuron Action Potentials and Graded Potentials

Exploring Neuron Action Potentials and Graded Potentials

Assessment

Interactive Video

Biology

6th - 10th Grade

Medium

Created by

Aiden Montgomery

Used 1+ times

FREE Resource

This video by Paul Anderson explains the concept of action potentials in neurons, detailing the resting potential, the role of sodium and potassium ions, and the mechanism of action potentials. It covers how signals propagate along the axon and the importance of voltage-gated channels. The video also discusses graded potentials and the all-or-none law governing action potentials.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary function of an action potential in neurons?

To produce hormones

To digest food

To transmit information

To store energy

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which ions are primarily involved in establishing the resting potential of a neuron?

Hydrogen and oxygen

Calcium and magnesium

Chloride and bicarbonate

Sodium and potassium

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the typical resting potential of a human neuron?

0 millivolts

70 millivolts

-70 millivolts

-30 millivolts

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What role does the sodium-potassium pump play in maintaining the resting potential?

It pumps sodium into the cell and potassium out

It pumps potassium into the cell and sodium out

It pumps both sodium and potassium into the cell

It pumps both sodium and potassium out of the cell

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

At what voltage do sodium voltage-gated channels open during an action potential?

30 millivolts

-70 millivolts

-55 millivolts

0 millivolts

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the voltage of a neuron when sodium ions rush into the cell during an action potential?

It fluctuates randomly

It becomes more negative

It remains the same

It becomes more positive

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does myelination affect the speed of action potential propagation?

It slows it down

It stops it completely

It has no effect

It speeds it up

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