The term informosome is applies to :-

Options

A. t-RNA protein complex
B. m-RNA protein complex
C. m-RNA + t- RNA complex
D. t- RNA + t- RNA complex

Answer

### Step-by-Step Solution:

1. **Understanding the Term "Informosome":**
- The term "informosome" is used in the context of molecular biology and genetics. It refers to a specific type of complex that plays a crucial role in the cellular processes involving RNA and proteins.

2. **Identifying Components of Informosome:**
- Informosomes are primarily composed of messenger RNA (mRNA) and proteins. This means they are not just RNA or proteins alone but a complex formed by both.

3. **Function of Informosome:**
- The main functions of informosomes include:
- **Transporting mRNA:** They facilitate the movement of mRNA from the nucleus (where it is synthesized) to the cytoplasm (where it is translated into proteins).
- **Protecting mRNA:** Informosomes help protect mRNA from degradation, ensuring that it remains intact for translation.
- **Regulating Protein Synthesis:** They play a role in the regulation of protein synthesis by controlling the availability and stability of mRNA.

4. **Evaluating the Options:**
- Given the options:
1. tRNA-protein complex
2. mRNA-protein complex
3. mRNA-tRNA complex
4. tRNA-tRNA complex
- The correct answer is the second option: **mRNA-protein complex**, as it aligns with the definition and functions of informosomes.

5. **Conclusion:**
- Therefore, the term "informosome" applies to the **mRNA-protein complex**.