LIFE SCIENCE

Detailed explanation-1: -Gases, hydrophobic molecules, and small polar uncharged molecules can diffuse through phospholipid bilayers. Larger polar molecules and charged molecules cannot.

Detailed explanation-2: -The cell plasma membrane is largely composed of phospholipid bilayers, and water can cross the cell membranes via two basic pathways: simple diffusion through the lipid bilayer or transit through water-selective channels, i.e., facilitated diffusion (1).