The biological membranes are composed of:
- ALipids and proteins in varying combinations which are specific to each species, cell type and organelle
- BLipids only
- CProteins only
- DNone of the above
Show answer and explanation
Correct answer: (a) Lipids and proteins in varying combinations which are specific to each species, cell type and organelle
Explanation
Biological membranes are semi-permeable barriers built mainly as a phospholipid bilayer with embedded proteins.
They consist of lipids and proteins in varying ratios that are specific to each species, cell type and organelle.
Lipids form the structural framework while proteins act as channels, receptors and transporters, so neither alone is correct.