Correct option is D
The correct answer is (d).
Biological membranes are primarily stabilized by non-covalent interactions such as hydrophobic interactions and hydrogen bonding, rather than covalent interactions. While covalent bonds are stable and permanent, they are not flexible enough to facilitate the dynamic process of self-sealing when membranes rupture. The key properties responsible for the self-sealing nature of biological membranes are the amphipathic character of lipids, hydrophobic interactions, and hydrogen bonding between the lipid heads and water.
Incorrect options-
Option (a) The amphipathic character of the lipids is essential for membrane formation and repair, as it drives spontaneous assembly into bilayers and promotes resealing.
Option (b) Hydrophobic interaction between lipid molecules is the main driving force for membrane self-sealing, as hydrophobic tails cluster to avoid water.
Option (c) Hydrogen bonding between the head groups of the lipids and water stabilizes the membrane surface and contributes to membrane integrity.
