41. the sodium–potassium pump is an example of a system that uses primary active transport to set up conditions that will allow secondary active transport, in this case, of glucose. all of the following about the sodium–potassium pump are true except: a. the na+ –k + pump is an antiporter fueled by the hydrolysis of atp. b. the subsequent movement of glucose into the cell is against its concentration gradient. c. the pump exports na+ ions to the outside of the cell and establishes a concentration gradient for na+ . d. k+ and na+ both diffuse into the cell along their concentration gradients and drive the transport of glucose. e. the movement of glucose is coupled to the movement of na+ by a symporter protein.

d. K+ and Na+ both diffuse into the cell along their concentration gradients and drive the transport of glucose.

Explanation:

Na/K pump is a pump located on the plasma membrane which uses ATP to move 3 Na ions out the cell and brings in 2 K ions into the cell. It is an example of primary active transport. As a consequence,concentration of Na is higher outside the cell, while K concentration is higher inside the cell.

Glucose is transported in the cell against its gradient, together with Na ions (symport) which move down their concentration gradient.

This is an example of secondary active transport because it uses the energy from the primary active transport to move other substances such as glucose against their own gradients.

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