NEET BIOLOGY

Detailed explanation-1: -The presence of fatty acids in the bilayer membranes provides an excellent anisotropic solution for other membrane constituents. They confer fluidity to the membrane bilayer [24], wherein membrane-bound receptors, enzymes, and other proteins can diffuse laterally along the surface of the bilayer membrane.

Detailed explanation-2: -Phospholipids (PL) are a group of polar lipids that consist of two fatty acids, a glycerol unit and a phosphate group which is esterified to an organic molecule (X) such as choline, ethanolamine, inositol, etc.

Detailed explanation-3: -With few exceptions, cellular membranes-including plasma membranes and internal membranes-are made of glycerophospholipids, molecules composed of glycerol, a phosphate group, and two fatty acid chains. Glycerol is a three-carbon molecule that functions as the backbone of these membrane lipids.

Detailed explanation-4: -As structural components of the plasma membrane, lipids are responsible for contributing to membrane tension, rigidity, and overall shape. After an injury, the biophysical properties of the plasma membrane, and the individual lipids themselves, are altered, eliciting changes to membrane rigidity and fluidity.