Which organelle helps in the synthesis of lipids, chloesterol, steroids and visual pigments in epithelial cells of retina ?

Options

A. Golgi bodies
B. RER
C. SER
D. Mitochondria

Answer

To answer the question regarding which organelle helps in the synthesis of lipids, cholesterol, steroids, and visual pigments in the epithelial cells of the retina, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Organelles**: The question provides four options: Golgi bodies, Rough Endoplasmic Reticulum (RER), Smooth Endoplasmic Reticulum (SER), and Mitochondria.

2. **Analyze Golgi Bodies**:
- Golgi bodies are primarily involved in the modification and transportation of proteins. They do not play a significant role in the synthesis of lipids or steroids.
- **Conclusion**: Golgi bodies are not the correct answer.

3. **Analyze Rough Endoplasmic Reticulum (RER)**:
- RER is associated with the synthesis and modification of proteins due to the presence of ribosomes on its surface. It is not directly involved in lipid synthesis.
- **Conclusion**: RER is not the correct answer.

4. **Analyze Mitochondria**:
- Mitochondria are known as the powerhouse of the cell, primarily involved in energy production through cellular respiration. They do not synthesize lipids or steroids.
- **Conclusion**: Mitochondria are not the correct answer.

5. **Analyze Smooth Endoplasmic Reticulum (SER)**:
- SER is involved in the synthesis of lipids, cholesterol, and steroids. It is also responsible for the synthesis of visual pigments, especially in the epithelial cells of the retina.
- SER is located near the plasma membrane, which facilitates the transport of these synthesized molecules to the membrane.
- **Conclusion**: SER is the correct answer.

### Final Answer:
The organelle that helps in the synthesis of lipids, cholesterol, steroids, and visual pigments in the epithelial cells of the retina is the **Smooth Endoplasmic Reticulum (SER)**.

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