Fluid-Mosaic Model

Definition

The fluid-mosaic model describes the structure of cell membranes as a flexible layer made of lipid molecules interspersed with large protein molecules that act as channels through which other molecules enter and leave the cell.

Related terms

Phospholipid Bilayer:

A two-layered arrangement of phosphate and lipid molecules that form a cell membrane.

Integral Proteins:

These are permanently attached within the plasma membrane and perform various functions such as transporting nutrients into cells.

Peripheral Proteins:

These proteins are temporarily attached either to lipid bilayer or integral proteins; they play key roles in cellular processes.