Question

Sodium potassium pump transports

• A. $N{a}^{+}$ and $K^{+}$ out of the neuron
• B. $N{a}^{+}$and $K^{+}$ into the neuron
• C. $N{a}^{+}$into the neuron and $K^{+}$ out of the neuron
• D. $K^{+}$ into the neuron and $N{a}^{+}$out of the neuron

Answer 1

The correct option is D $K^{+}$ into the neuron and $N{a}^{+}$out of the neuron

Solution: D.

The sodium-potassium pump is an ATPase present in the cell membrane which transfers $N{a}^{+}$ out of the neuron and $K^{+}$ into the neuron at the expense of an ATP. Both the ions are exchanged against their electrochemical gradient. It works via active transport.