Who gave fluid mosaic model w.r.t. cell membrane?

Explanation

**Step-by-Step Solution:**

1. **Identify the Model**: The question asks about the "fluid mosaic model" concerning the cell membrane. This model describes the structure and behavior of cell membranes.

2. **Recognize the Scientists**: The fluid mosaic model was proposed by scientists Singer and Nicholson. They introduced this model in the early 1970s.

3. **Understand the Components**: According to the fluid mosaic model, the cell membrane is primarily composed of lipids (specifically phospholipids) and proteins.

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