Read the following statements regarding functions of the tubules and choose the incorrect statements.
a)      Urea is actively reabsorbed from the collecting duct.
b)      Water is passively reabsorbed from the PCT.
c)      Amino acids are actively reabsorbed from the DCT.
d)      NaCl is passively reabsorbed from the thin part of ascending limb.
e)       $K^{+}$ and $H^{+}$ are selectively secreted into the descending limb.

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b, c and d only

a and c only

c and e only

a, c and e only

answer is D.

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Detailed Solution

Water is passively reabsorbed from the PCT.

NaCl is passively reabsorbed from the thin part of ascending limb.

Urea is passively reabsorbed from the collecting duct.

Amino acids are actively reabsorbed from the PCT.

$K^{+}$ and $H^{+}$ are selectively secreted into the PCT, DCT and collecting duct.

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