Question

$N{a}^{+}/K^{+}$ pump in a cell is an example of _________.

• A. Osmosis
• B. Diffusion
• C. Passive transport
• D. Active transport

Answer 1

The correct option is D Active transport

D. Active transport

Reason: $N{a}^{+}$ and $K^{+}$ ions can not diffuse through the cell membrane because the cell membrane is negatively charged. The transports across the cell membrane require energy (hydrolysis of ATP), which is known as active transport. $N{a}^{+}$/$K^{+}$ pump is an example of this kind of transport unit which transports these ions against the gradient.

So the correct option is D.