Q.
The lipid molecules present in plasma membrane have polar heads and non-polar tails (as shown in figure). Which option represents the correct arrangement of lipids in lipid bilayer?
Cell : The Unit of Life
Solution:
The lipid molecules are amphipathic, i.e., they possess both hydrophilic (Watter loving) and non polar hydrophobic (water repelling) ends. The hydrophilic region is in the form of a head occurring at outer surface while the hydrophobic part contains two tails of fatty acids. Hydrophobic tails usually occur towards the centre of the membrane. If results in the membrane. It results in the formation of a lipid bilayer. Most common lipid in the bilayer is phospholipid.
