Biology

The significance of the fluid mosaic model lies in option C. It explains the dynamic and flexible nature of the membrane.

The model depicts the cell membrane as a phospholipid bilayer with proteins embedded in it. Phospholipids can move laterally, like a fluid. This fluidity is crucial as it allows cells to change shape, for example during cell division. The membrane's flexibility enables processes such as endocytosis and exocytosis.

It's not A because the model shows the opposite of a rigid and static membrane. ...