Cell membrane.
hydrogen bonds with the polar end of the phospholipid molecule
The head and tail is a phospholipid molecule
Phosphate molecules.
Phosphate molecules.
amphipathic molecules
Yes, polar molecules can pass through the phospholipid bilayer through facilitated diffusion or active transport.
The cell membrane is a phospholipid bilayer, consisting of two layers of phospholipid molecules. Each phospholipid molecule has a hydrophilic (water-attracting) head and hydrophobic (water-repelling) tails, creating a barrier that controls the movement of molecules in and out of the cell.
phosphate
Phosphate molecules.
This is called the hydrophobic 'side' of the phospholipid molecule
Side-by-side
they form a bilayor