Fluid mosaic model of plasma membrane was given by

Options

A. Robertson
B. Gorter and Grendel
C. Singer and Nicolson
D. Danielli and Davson

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks who proposed the fluid mosaic model of the plasma membrane.

2. **Identifying Key Contributors**: The video transcript mentions several scientists associated with the plasma membrane models:
- Robertson
- Gorter and Grendel
- Singer and Nicholson
- Daniel and Davidson

3. **Analyzing the Contributions**:
- **Robertson**: Proposed the biomembrane model, which was later rejected.
- **Gorter and Grendel**: Conducted experiments on red blood cells and contributed to the understanding of the lipid bilayer.
- **Singer and Nicholson**: Proposed the fluid mosaic model, which describes the plasma membrane as a bilayer of lipids with proteins embedded within it. This model is widely accepted today.
- **Daniel and Davidson**: Proposed a sandwich model, which was similar to Robertson's model but also did not gain acceptance.

4. **Conclusion**: Based on the information provided, the fluid mosaic model of the plasma membrane was given by **Singer and Nicholson**.

5. **Final Answer**: The correct answer is **Singer and Nicholson**.

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