The nonpolar layer is involved in the selective transport of certain molecules across the membrane. It provides a hydrophobic environment that allows nonpolar molecules to diffuse across the membrane, while larger or polar molecules require the assistance of specialized transport proteins.
Without the nonpolar layer, the ability of the cell to regulate the transport of molecules in and out of the cell would be compromised.
Overall, the absence of the nonpolar layer of the cell membrane would likely have significant consequences for the structure, function, and survival of the cell.