The surface of RER has

Options

A. Lysosome and vacuoles
B. Ribosomes
C. Golgi complex
D. plastids

Answer

**Step-by-Step Text Solution:**

1. **Understanding RER**: The Rough Endoplasmic Reticulum (RER) is a type of endoplasmic reticulum that is characterized by the presence of ribosomes on its surface.

2. **Why is it called 'Rough'?**: The term 'rough' in Rough Endoplasmic Reticulum comes from the ribosomes that are attached to its cytoplasmic surface. These ribosomes give the RER a rough appearance when viewed under a microscope.

3. **Function of RER**: The primary function of the RER is the synthesis of proteins. The ribosomes on the RER are responsible for translating mRNA into polypeptide chains, which will eventually fold into functional proteins.

4. **Analyzing the Options**: The question provides several options regarding what is present on the surface of RER:
- Lysosome and Vacuoles
- Ribosomes
- Golgi complex
- Plastids

5. **Evaluating Each Option**:
- **Lysosome and Vacuoles**: These are distinct organelles and are not found on the surface of RER. Therefore, this option is incorrect.
- **Ribosomes**: This is the correct answer, as ribosomes are indeed present on the surface of the RER.
- **Golgi complex**: This is another cell organelle and is not attached to the RER. Thus, this option is incorrect.
- **Plastids**: These are found in plant cells and are not associated with the RER. Therefore, this option is also incorrect.

6. **Conclusion**: Based on the analysis, the surface of the Rough Endoplasmic Reticulum (RER) has ribosomes.

**Final Answer**: The surface of RER has ribosomes.

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