Assertion- A cell membrane shows fluid behaviour.
Reason- A membrane is a mosaic or composite of diverse lipids and proteins.

Options

A. If the both assertion and reason are true and the reason is the correct explanation of the assertion
B. If both assertion and reason are true and the reason is not the correct explanation of the assertion
C. If assertion is true but reason is false
D. If both assertion and reason are false statements.

Answer

A

Explanation

The sturcture of cell membrane can be described by the fluid-mosaic model. The essential feature of fluid-mosaic model (by singer and nicolson, 1972) is that cell membranes are considered to be quasifluid structures in which the lipids and proteins are in mosaic manner. The singer-nicolson model considered the lipid protein association (mosaic)to be hydrophobic. The fluidity of the membane is the result of this hydrophobic intraction, thus a cell membrane shows fluid bahaviour.