Question

The following image shows two lipid bilayers composed entirely of phospholipids. Which lipid bilayer would you expect to be more permeable to water and small molecules?

Answer 1

Both lipid bilayers are equally permeable to water and small molecules.

The lipid bilayer composed of mixed saturated and unsaturated lipids is more permeable to water and small molecules.

The lipid bilayer composed of saturated lipids only is more permeable to water and small molecules.

Neither lipid bilayer is permeable to small molecules.