Action Potential Review

Which part of the graph represents depolarization?

• A

• B

• D

• E

Which part of the graph represents repolarization?

• A

• B

• D

• E

Which part of the graph represents resting membrane potential?

• A

• B

• D

• E

Tags

NGSS.HS-LS1-3

Which part of the graph represents hyperpolarization?

• A

• B

• D

• E

Which voltage is correct for the resting membrane potential of neurons?

• -70 mV

• 70 mV

• 55 mV

• -30 mV

Threshold is found at which of the following voltages?

• -70 mV

• -55 mV

• +30 mV

• 0 mV

What does it mean when you say that action potentials are "One Size Fits All"?

• There are no large or small action potentials. They are all the same magnitude.

• If depolarization does not reach threshold, an action potential is not created.

• Large graded potentials lead to large action potentials.

• Action potential remain the same strength the entire length of the axon.

Which of the following is NOT true about graded potentials?

• The are found in dendrites.

• They vary with the strength of the stimulus.

• They are only found in neurons.

• They do not decrease in intensity over a distance.

Which of the following is TRUE about action potentials?

• They occur only in neurons.

• They decrease in intensity over a distance.

• They are found in dendrites.

• They never vary in magnitude.

Which type of channel responds to changes in electrical charge across the membrane?

• mechanically gated channels

• leakage channels

• chemically gated channels

• voltage gated channels