Functional unit of protein synthesis is :–

Options

A. Dictyosome
B. Polysome
C. Peroxisome
D. Lysosome

Answer

To determine the functional unit of protein synthesis, we can analyze the provided options step by step.

### Step-by-Step Solution:

1. **Identify the Options**: The options given are Dictyosome, Polysome, Peroxisome, and Lysosome.

2. **Evaluate Dictyosome**:
- Dictyosomes are membrane-bound structures involved in the packaging and transport of proteins. They are part of the Golgi apparatus.
- **Conclusion**: Dictyosome is not the functional unit of protein synthesis.

3. **Evaluate Polysome**:
- Polysomes, also known as polyribosomes, are clusters of ribosomes that are simultaneously translating a single mRNA strand into protein. They are directly involved in the process of protein synthesis.
- **Conclusion**: Polysome is the correct answer as it is the functional unit of protein synthesis.

4. **Evaluate Peroxisome**:
- Peroxisomes are organelles that contain enzymes for fatty acid oxidation and detoxification processes.
- **Conclusion**: Peroxisome is not involved in protein synthesis.

5. **Evaluate Lysosome**:
- Lysosomes are known as "suicidal bags" of the cell, as they contain digestive enzymes that break down waste materials and cellular debris.
- **Conclusion**: Lysosome is not involved in protein synthesis.

6. **Final Answer**: Based on the evaluations, the functional unit of protein synthesis is **Polysome**.