Home / Question Bank / Biology / Cell: The Unit of Life / Question 3 NEET Biology Class 11 Plasma membrane Medium Single correct
The fluid mosaic model of the plasma membrane, proposed by Singer and Nicolson in 1972, describes how membrane lipids and proteins are organised. Which statement correctly describes this arrangement? (A) The membrane is a rigid, static lipid bilayer, with all proteins fixed permanently on its outer surface only (B) Proteins form a continuous layer completely coating both surfaces of the lipid bilayer, like bread around a filling (C) The lipid bilayer is quasi-fluid, and most proteins are embedded to varying depths, giving the membrane a mosaic look; proteins and lipids can move laterally (D) The membrane is composed almost entirely of protein, with only a few scattered lipid molecules trapped between them Show answer and explanation ← Question 2 All Cell: The Unit of Life questions Question 4 → More NEET Biology chapters © 2026 Lumi (Aikolumi Software Pvt Ltd). Original questions written by Lumi. Free to view and practise on this site. Copying, republishing or reproducing these questions, options or solutions, in print or online, is not permitted.
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