In a resting state of the neural membrane, Na⁺ concentration is higher on the outer side and K⁺ concentration is more within the cell. This concentration gradient is maintained by voltage gated channels. Hence if diffusion is allowed Na⁺ would enter the cell and K⁺ would leave.

Question

Accepted Answer

This concentration gradient is maintained by voltage gated channels.. The key issue is the mechanism that maintains the resting Na⁺ and K⁺ concentration differences. That gradient is not maintained by voltage-gated channels; it is maintained primarily by the Na⁺/K⁺ pump, so the given statement is the one that is incorrect in the passage’s logic.

In a resting state of the neural membrane, Na⁺ concentration is higher on the outer side and K⁺ concentration is more within the cell. This concentration gradient is maintained by voltage gated channels. Hence if diffusion is allowed Na⁺ would enter the cell and K⁺ would leave.

Solution

Related NEET Biology questions