The main of functions of aquaporins are:
a. It transports water in and out of the cell.
b. It has high water permeability. (quickly and readily).
c. It prevents the passage of ions and solutes.
d. It transports small amounts of uncharged solute depending on the size of the pores.
e. It is impermeable to charged species.
f. It controls the water content of the cell.