Most widely accepted model for plasma membrane is

Options

A. Sandwitch model
B. Fluid mosaic model
C. Unit membrane model
D. Trilamellar model

Answer

**Step-by-Step Solution:**

1. **Identify the Question**: The question asks for the most widely accepted model for the plasma membrane.

2. **Review the Options**: The options provided are:
- Sandwich model
- Fluid mosaic model
- Unit membrane model
- Tri laminar model

3. **Recall Relevant Information**: The fluid mosaic model is the most recognized and accepted model for the plasma membrane. It was proposed by Singer and Nicolson in 1972.

4. **Understand the Model**: The fluid mosaic model describes the plasma membrane as a lipid bilayer with various proteins and other molecules embedded within it, resembling a mosaic. This structure allows for fluidity and flexibility, enabling the movement of substances across the membrane.

5. **Consider the Characteristics**: The fluid mosaic model emphasizes:
- The semi-permeable nature of the membrane.
- The presence of phospholipids that contribute to the fluidity.
- The role of cholesterol in maintaining membrane structure and fluidity.

6. **Conclude the Answer**: Based on the information, the most widely accepted model for the plasma membrane is the **Fluid Mosaic Model**.

**Final Answer**: Fluid Mosaic Model

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