Answer:
Hydrophobic part of the lipid membrane.
Step-by-step explanation:
Cell membrane composed of the lipid bilayer and proteins are inserted or may span the membrane bilayer. The cell membrane also composed of carbohydrates in association with lipids and proteins.
The lipid bilayer contains the hydrophilic head and the hydrophobic tail. Hydrophobic tail is immiscible with water as water is a polar molecule and the hydrophobic tail is non polar. The hydrophobic tail can easily be dissolved in non polar solvents.
Thus, the answer is hydrophobic part of the lipid membrane.