An improved model of the structure of cell membrane was proposedby Singer and Nicolson (1972) widely accepted as fluid mosaic model(Figure 8.4). According to this, the quasi-fluid nature of lipid enableslateral movement of proteins within the overall bilayer. This ability to movewithin the membrane is measured as its fluidity.

Which of the following regarding the fluid mosaic model is NOT true:Group of answer choicesdescribes the plasma membrane as a two-dimensional fluiddescribes a membrane made of different components including proteins and lipidsdescribes a membrane that allows lateral movement of components including proteinsdescribes a rigid plasma membrane made of lipid bilayer

What can restrict the movement of integral membrane proteins within the cell membrane?

69. The quasi–fluid nature of lipid enables:-Pg-132, easyA) Flip–flop movement of proteins withinthe lipid bilayer.TG: @Chalnaayaaar

The fluid nature of the membrane is also important from the point of view of functions like :-(i) Cell growth (ii) Formation of intercellular junctions(iii) Secretions (iv) Endocytosis (v) Cell division i, iii, ivii, iii, vi, iii, iv, vi, ii, iii, iv, v

How does the composition of the cell membrane help regulate the movement of substances into and out of the cell?