Plasma membrane has fluid-mosaic model. Justify your statement.

Explanation

### Step-by-Step Solution:

1. **Introduction to the Fluid Mosaic Model**:
- The plasma membrane is described by the fluid mosaic model, which was proposed by scientists Singer and Nicholson. This model explains the structure and behavior of the plasma membrane.

2. **Composition of the Plasma Membrane**:
- The plasma membrane is primarily composed of a bilayer of phospholipids. These phospholipids have hydrophilic (water-attracting) heads and hydrophobic (water-repelling) tails, which arrange themselves into two layers.

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