Question

The fluid mosaic model of plasma membrane was given by
A. Robertson
B. Robert Hooke
C. Singer and Nicholson
D. Gorter and Grendel

Answer 1

Hint:-Plasma membrane is also called as biological membrane found In all cells of living
organisms, where it is the membrane that separates the interior of the cell to the external environment,
and it has various functions such as protection, and exchange of substances, etc.

Complete step-by-step solution:-
1. The fluid mosaic model of the plasma membrane is the most important and acceptable model
which was given by the scientist singer and Nicholson in the year 1972.
2. Where the plasma membrane is made up of different types of components such as
phospholipids, proteins, and carbohydrates, etc.
3. Most of the percentage of cell membrane component is phospholipids arranged as players
which restrict the entry of substances and also to separate the external environment to the
interior of the cell.
4. When coming to an arrangement of phospholipid layer it is arranged in the form of a bilayer,
where they consist of hydrophilic heads and hydrophobic tails, where both layers of hydrophilic
heads are attached and appear as three layers with heads sandwiched between hydrophobic
tails. So this phospholipid layer is amphiphilic.
5. Another important constituent of the plasma membrane is integrated proteins which are
integrated with other competent, and this is important to appear as a fluid mosaic.
6. After proteins, another important component of the cell membrane is carbohydrates which are
present on the external surface of the cells, and these carbohydrates are associated with other
components to form glycolipids and glycoproteins, etc.
So the correct option is C.

Note:- Fluid mosaic model is the most accepted cell membrane model, which is composed of various components out of which phospholipid layer is a major one and all other like proteins and
carbohydrates are arranged as they are embedded in it, this is the reason it got the name fluid mosaic
model.