Question

during depolarization, which of the following statements about voltage - gated ion channels is true? multiple choice k⁺ gates open before na⁺ gates. na⁺ gates open before k⁺ gates. na⁺ and k⁺ gates open at the same time. k⁺ gates open while na⁺ gates remain closed.

Explanation:

During depolarization of a neuron, voltage - gated sodium ($Na^+$) channels open first, allowing sodium ions to rush into the cell and cause the membrane potential to become more positive. Then, voltage - gated potassium ($K^+$) channels open later to help repolarize the cell.

Answer:

Na⁺ gates open before K⁺ gates.