Answer:
[tex]\huge\boxed{\sf Cell \ Membrane}[/tex]
Explanation:
This is a drawing of cell membrane which is the top-most layer of animals cells while the second layer of plant cells.
1 => Lipid Bilayer
2 => Hydrophobic tail (non-polar) of phospholipids
3 => Hydrophilic head (polar) of phospholipids
[tex]\rule[225]{225}{2}[/tex]
Hope this helped!
~AH1807
