Question
Biology Question on Eukaryotic Cells
Na/K pump is associated with
A
passive transport
B
active transport
C
osmosis
D
imbibition
Answer
active transport
Explanation
Solution
Sodium-potassium pump (Na-K) is a membrane transport protein that exchanges sodium ions (Na) for potassium ions (K). It transports 3 Na outwards for 2K into the cell, thus maintaining the differential concentrations of each ion across the plasma membrane. The process requires energy in the form of ATP, being a form of active transport.