The head.
The head is polar
Non-polar tail refers to the hydrophobic region of a phospholipid molecule, which repels water molecules. Polar head refers to the hydrophilic region of a phospholipid molecule, which is attracted to water molecules. Together, they form the phospholipid bilayer of cell membranes.
The head (or top) of a phospholipid is polar and the carbon chain tail is non-polar.
This is called the hydrophobic 'side' of the phospholipid molecule
Yes, polar molecules can pass through the phospholipid bilayer through facilitated diffusion or active transport.
Phosphate molecules.
The phospholipid bilayer in cell membranes is both polar and nonpolar. The heads, which face the outside and inside of the cell, are polar. Thus they form hydrogen bonds with the water outside of the cell and the cytoplasm inside the cell. They are called "hydrophilic," which means they love water. The tails are on the inside of the bilayer and are nonpolar. They are hydrophobic, which literally means they are scared of water.
phosphate
Phosphate molecules.
Phosphate molecules.
Phosphate molecules.
Soap is actually both. It is similar to a phospholipid in that it has a polar head and a nonpolar tail.