Question

Urea is reabsorbed in the collecting duct by

a. simple diffusion.
b. facilitated diffusion.
c. primary active transport.
d. secondary active transport.

Answer 1

Urea is reabsorbed in the collecting duct through facilitated diffusion.The presence of aquaporin proteins also influences the reabsorption of water in the collecting duct.

Step-by-step explanation:

In the process of urine formation, urea is reabsorbed in the collecting duct through falicitated diffusion.

This means that urea moves across the cell membrane with the help of specific transport proteins, going from an area of higher concentration to an area of lower concentration.

The presence of aquaporin proteins also influences the reabsorption of water in the collecting duct.