Fluid mosaic model was proposed by:-

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the name of the scientist who proposed the fluid mosaic model of the cell membrane.

2. **Historical Context**: The fluid mosaic model was proposed in the early 1970s. This model describes the structure of the cell membrane.

3. **Identifying the Scientists**: The fluid mosaic model was proposed by two scientists: Singer and Nicholson.

4. **Description of the Model**: According to the fluid mosaic model, the cell membrane consists of a lipid bilayer with proteins embedded within it. These proteins can be classified into two types:
- **Integral Proteins**: These are embedded within the lipid bilayer.
- **Peripheral Proteins**: These are located on the surface of the membrane.

5. **Additional Components**: The model also includes other components such as channel proteins, glycoproteins, glycolipids, and cholesterol, which contribute to the functionality and fluidity of the membrane.

6. **Final Answer**: Therefore, the fluid mosaic model was proposed by **Singer and Nicholson**.

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