Association of m-RNA with several ribosomes is called

Options

A. Polysome
B. Informosome
C. Both (1) and (2)
D. None of these

Answer

**Step-by-Step Solution:**

1. **Understanding mRNA and Ribosomes**:
- mRNA (messenger RNA) is a type of RNA that carries genetic information from DNA to the ribosomes, where proteins are synthesized.
- Ribosomes are the cellular machinery that translate the mRNA sequence into a polypeptide chain (protein).

2. **Defining the Association**:
- When multiple ribosomes attach to a single mRNA strand, they can simultaneously translate the mRNA into proteins. This process allows for the efficient production of proteins.

3. **Term for the Association**:
- The specific term used to describe the association of mRNA with several ribosomes is "polyribosomes" or "polysomes".

4. **Function of Polysomes**:
- Polysomes facilitate the rapid synthesis of multiple copies of a protein from a single mRNA molecule. This is crucial for the cell to produce proteins quickly and in large quantities when needed.

5. **Conclusion**:
- Therefore, the association of mRNA with several ribosomes is called polysomes.

**Final Answer**: The association of mRNA with several ribosomes is called polysomes.

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