The head and tail is a phospholipid molecule
phosphate
Phosphate molecules.
Phosphate molecules.
Cell membrane.
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 molecules.
This is called the hydrophobic 'side' of the phospholipid molecule
hydrogen bonds with the polar end of the phospholipid molecule
Side-by-side
they form a bilayor