The fluid mosaic model of plasma membrane given by Singer and Nicolson is applicable for :

Options

A. Only for prokaryotic membrane
B. Only for eukaryotic membrane
C. Both for prokaryotic and eukaryotic membranes
D. Only for organeller membranes

Answer

To solve the question regarding the applicability of the fluid mosaic model of the plasma membrane proposed by Singer and Nicolson, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Fluid Mosaic Model**: The fluid mosaic model describes the structure of the plasma membrane, which consists of a bilayer of phospholipids with proteins embedded within it. This model emphasizes the fluidity and flexibility of the membrane, allowing for the movement of proteins and lipids.

2. **Identify the Components of the Model**: The model includes:
- A bilipid layer primarily made up of amphipathic phospholipids.
- Embedded proteins that can move laterally within the layer.
- A small amount of carbohydrates attached to proteins and lipids.

3. **Determine the Scope of the Model**: The fluid mosaic model is applicable to:
- **Eukaryotic Cells**: These cells have complex membranes with various proteins and lipids, fitting the fluid mosaic description.
- **Prokaryotic Cells**: Although simpler, prokaryotic cells also possess a plasma membrane that can be described by the fluid mosaic model, as they too have a lipid bilayer and proteins.

4. **Evaluate the Options**: The options provided are:
- Only for prokaryotic membrane
- Only for eukaryotic membrane
- Both for prokaryotic and eukaryotic membranes
- Only for organellar membranes

Based on our understanding, the correct choice is that the fluid mosaic model is applicable to both prokaryotic and eukaryotic membranes.

5. **Select the Correct Answer**: Therefore, the correct answer is:
- **Both for prokaryotic and eukaryotic membranes**.

### Final Answer:
The fluid mosaic model of plasma membrane given by Singer and Nicolson is applicable for **both prokaryotic and eukaryotic membranes**.

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