Question

In the membrane of a resting nerve cell, when chemically gated Cl- channels open,

A) Cl- ions enter the cell.
B) Cl- ions leave the cell.
C) the cell becomes depolarized.
D) A and C
E) B and C

Answer 1

In the membrane of a resting nerve cell, when chemically gated Cl- channels open, Cl- ions leave the cell, and this process is not involved in depolarization.

Step-by-step explanation:

In the membrane of a resting nerve cell, when chemically gated Cl- channels open, Cl- ions leave the cell.

When the membrane potential of the nerve cell is at rest, there is a higher concentration of Cl- ions inside the cell compared to outside. When the chemically gated Cl- channels open, these channels allow the Cl- ions to exit the cell, resulting in Cl- ions leaving the cell.

This process is not involved in depolarization. Depolarization occurs when there is a shift in the membrane potential towards positive due to the opening of Na+ channels that allow Na+ ions to enter the cell.