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The lipid molecules present in plasma me...

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 ?

A

B

C

D

Text Solution

Verified by Experts

The correct Answer is:
B
The lipid molecules are amphipathic, i.e., they posses both polar hydrophilic (water loving) and nonpolar 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. It in the formation of a lipid bilayer. Most common lipid in the bilayer is phospholipid.
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