Ribosomal RNA synthesis takes place in

Options

A. Nucleoplasm
B. Nucleus
C. Nucleolus
D. Cytoplasm

Answer

To answer the question "Ribosomal RNA synthesis takes place in," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding RNA Synthesis**:
- RNA synthesis refers to the process of creating RNA molecules from a DNA template. There are different types of RNA, including messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA).

2. **Location of RNA Synthesis**:
- All types of RNA synthesis occur within the cell nucleus. The nucleus contains the genetic material (DNA) that serves as the template for RNA synthesis.

3. **Identifying the Specific Site for rRNA Synthesis**:
- Within the nucleus, there is a specialized structure known as the nucleolus. The nucleolus is a dense region where ribosomal RNA (rRNA) is synthesized and where ribosome assembly begins.

4. **Conclusion**:
- Since ribosomal RNA is a type of RNA, its synthesis specifically occurs in the nucleolus of the nucleus. Therefore, the correct answer to the question is "nucleolus."

### Final Answer:
Ribosomal RNA synthesis takes place in the nucleolus.

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