The fluid nature of the membrane is important from the point of view of functions like

Answer

### Step-by-Step Solution:

1. **Understanding Fluid Nature of Membrane**: The fluid nature of the cell membrane refers to the ability of the lipid bilayer to allow movement of its components, including proteins and lipids. This characteristic is crucial for various cellular functions.

2. **Fluid Mosaic Model**: The concept of the fluid mosaic model, proposed by Singer and Nicholson, describes the structure of the plasma membrane. It illustrates that the membrane is not a rigid structure but rather a dynamic one where components can move laterally.

3. **Functions of Fluid Nature**:
- **Transport of Molecules**: The fluidity of the membrane allows for the easy movement of substances across it. This includes passive transport (like diffusion) and active transport mechanisms.
- **Cell Enlargement**: As cells grow, the membrane must stretch and expand. The fluid nature allows the membrane to accommodate this growth without breaking.
- **Cell Division**: During cell division, the membrane must be able to reorganize and form new membranes for the daughter cells. The fluidity facilitates this process.
- **Secretion of Materials**: The membrane's fluidity is essential for exocytosis, where materials are secreted from the cell. The vesicles can easily fuse with the membrane due to its flexible nature.

4. **Conclusion**: In summary, the fluid nature of the membrane is vital for several functions, including the transport of molecules, cell enlargement, cell division, and secretion of materials.