Question

question 4 1 pts some molecules like oxygen and carbon dioxide can pass through the cell membrane freely, but water needs a ____ to pass through. (1:00) pore/transport protein lipid bilayer opening in the membrane

Explanation:

Water is a polar molecule. The cell - membrane's lipid bilayer is hydrophobic in the interior. Water cannot easily pass through the lipid bilayer. It requires a pore or transport protein (such as aquaporins) to cross the cell membrane.

Answer:

A. pore/transport protein