Question

Match the various models proposed for plasma membrane.

List 1 List 2

(A) Fluid mosaic	1. Danielli and Davson
(B) Micellar model	2. Hillier and Hoffman
(C) Unit membrane model	3. Singer and Nicolson
(D) Lattice model	4. Wolpers
	5. Robertson

• A. A-3, B-1, C-4, D-2
• B. A-3, B-4, C-5, D-1
• C. A-3, B-2, C-5, D-4
• D. A-3, B-2, C-4, D-5

Answer 1

Answer: (C)

A-3, B-2, C-5, D-4

In an attempt to explain the physical and biological features of cell membranes, two main categories of hypotheses have been proposed, the Bilayer Models and the Micellar or subunit Model. In the bilayer models, the protein and lipid constituting the membrane are believed to occur in layers. In the micellar models, the membrane is believed to consists of a number of similar units or micelles. Some of the important models proposed by various scientists are
Protein-Lipid-Protein Sandwich Model proposed by Danielli-Davson.
Unit Membrane Model proposed by Robertson.
Fluid Mosaic Model proposed by Singer and Nicolson.
Micellar Model was proposed by Hillier and Hoffman.
Lattice model was proposed by Wolpers. Thus, the correct answer is option C.