Where are the polar and non polar layers in the plasma membrane located?
the two fatty acid tails of the phospholipids are nonpolar, whereas the head is polar
Because cells have a watery environment both inside and outsidethe polar ends of the phospholipids in the plasma membrane form layers?
Polar molecules are hydrophylic. Because the inner portion of the phospholipid bilayer (plasma membrane) consists of hydrophobic interactions, generally polar molecules cannot pass directly though. These molecules require protein channels to actively or passively move between the cytosol and the plasma membrane. Non-polar molecules,due to their hydrophobic, nature can pass directly though the cell membrane.
Plasma membrane is structured in such a way that there there are two hydrophobic surfaces that sandwich an inner hydrophobic layer. any hydrophobic molecule can easily pass through the plasma membrane. The polar molecule in order to pass through the membrane will have to overcome a high energy barrier, that is not permissible in nature.