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Question

The pump helps in the reabsorption of sodium, amino acids and glucose.

A
Na+/K+ ATPase
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B
Na+/Cl ATPase
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C
Cl/K+ ATPase
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D
Na+/Na+ ATPase
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Solution

The correct option is A Na+/K+ ATPase
The Na+/K+ ATPase pump is present in the basolateral membrane of the tubular cells. As sodium is maintained in low concentration inside these cells, its concentration will be relatively high in the tubular fluid. This favours diffusion from the tubular filtrate into the tubular cells. The electric gradient and the movement of sodium along with its concentration gradient powers the reabsorption of molecules such as glucose, amino acids, and other ions like bicarbonates, etc. move along with sodium.

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