Question

the diffusion of water, a very small polar molecule, is such a vital process in living organisms that it has its own name: osmosis. even though water molecules are polar, they are very small, so they can pass through the phospholipid bilayer slowly. water molecules can travel more quickly across the cell membrane through integral proteins called aquaporins. this video shows osmosis. select the true statements. water molecules move against their concentration gradient. water molecules can only cross the cell membrane by facilitated diffusion. osmosis does not need cellular energy. water molecules cannot cross the cell membrane by simple diffusion.

Explanation:

Osmosis is passive transport. Water can cross membrane by simple diffusion slowly or via aquaporins (facilitated diffusion). It moves down - not against - concentration gradient and doesn't need cellular energy.

Answer:

Osmosis does not need cellular energy.