ADH increases the permeability of the distal convoluted tubules and collecting ducts by
A. incorporating aquaporin-3 channels into the apical membrane.
B. increasing the number of sodium transpot proteins in the membranes.
C. incorporating aquaporin-2 channels into the apical membrane.
D. decreasing the number of aquaporin-4 channels in the apical membrane.
Answer: C. incorporating aquaporin-2 channels into the apical membrane.