Which statement is true about Na⁺ reabsorption in the kidney?
A)It uses 80% of the energy requirement of the kidney
B)It is under control of aldosterone in the distal portions of the nephron
C)It is linked to the reabsorption of water, Cl-, glucose, amino acids, and urea
D)It requires that tubule cells expend energy
E)All of the above

Question

Quizplus · Accepted Answer

A) Na⁺ reabsorption requires active transport mechanisms, which use ATP, and therefore, it uses a significant amount of the energy requirement of the kidney.
B) Aldosterone stimulates the reabsorption of Na⁺ in the distal portions of the nephron, mainly in the collecting ducts.
C) Na⁺ reabsorption is responsible for the reabsorption of other substances such as water, Cl-, glucose, amino acids, and urea in the kidney.
D) As mentioned earlier, Na⁺ reabsorption requires active transport mechanisms and thus requires that tubule cells expend energy.

Which Statement Is True About Na⁺ Reabsorption in the Kidney