71ˢᵗ B.P.S.C. (Pre) 2025

The biological membranes are composed of:

aLipids and proteins in varying combinations which are specific to each species, cell type and organelle✓ Correct
bLipids only
cProteins only
dNone of the above

Explanation

Biological membranes are mainly made of various combinations of lipids and proteins, which are specific to a species, cell type, and organ. According to the modern fluid mosaic model, the basic framework of the membrane is a phospholipid bilayer (lipid bilayer), in which different types of proteins are found floating or embedded.

general-science