Aquaporins
A) allow water to cross the plasma membrane via facilitated diffusion.
B) allow water to cross the plasma membrane against its concentration gradient.
C) allow for the active transport of water.
D) are found in all cells.

Question

Quizplus · Accepted Answer

Aquaporins are channels that allow water to cross the membrane via facilitated diffusion, meaning they do not require energy and move water with its concentration gradient. They are found in many cell types and play a crucial role in water balance and retention. However, they do not allow for active transport or movement against the concentration gradient.