Question

What is the difference between depolarization and repolarization?

Answer 1

Hint: The change in the resting membrane potential from a negative to a positive value is referred to as depolarization. The potential across the cell membrane at rest is known as the resting membrane potential. When compared to the cell exterior, the cell inside is more negatively charged.
Following depolarization of the cell membrane, repolarization occurs when the membrane potential is changed back to the resting membrane potential. Following depolarization, the sodium channels close, resulting in a lower negative charge within, whereas the potassium channels open, resulting in a higher positive charge inside.

Complete answer:

DEPOLARIZATION	REPOLARIZATION
The movement of a cell's membrane potential to a more positive value is referred to as depolarization.	The change in membrane potential from a positive to a negative value is referred to as repolarization.
During depolarization, the inner membrane becomes less negative.	The inner membrane becomes negative after repolarization.
The membrane potential rises as a result of depolarization.	Repolarization lowers the membrane potential, restoring it to its resting state.
The firing of an action potential is aided by depolarization.	Repolarization stops an action potential from firing.
Depolarization occurs when sodium channels open.	Repolarization is caused by sodium channels closing and potassium ion channels opening.
Depolarization causes effector organs such as muscle contractions to be stimulated.	Repolarization does not cause the effector organ to be stimulated.

Note:
Similarities between depolarization and repolarization:
During the transmission of a nerve impulse, depolarization and repolarization occur on the cell membrane of nerve cells.
The opening and closure of ion channels regulates both.
During both events, the sodium-potassium pump is functioning.