When singal m-RNA is associated with multiple number of ribosome, it is called ?

Options

A. Polyribosomes (Polysomes)
B. Mesosome
C. Microsome
D. Capsule

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the term used when a single mRNA molecule is associated with multiple ribosomes.

2. **Identifying Key Terms**: The key terms in the question are "single mRNA" and "multiple ribosomes." This indicates that we are looking for a specific term that describes this arrangement.

3. **Recalling Biological Concepts**: In the process of translation, ribosomes bind to mRNA to synthesize proteins. When several ribosomes attach to the same mRNA strand, they can translate the mRNA simultaneously.

4. **Finding the Correct Term**: The structure formed when multiple ribosomes are attached to a single mRNA molecule is known as a "polyribosome." This term is also referred to as "polysome."

5. **Conclusion**: Therefore, the correct answer to the question is "polyribosomes" or "polysomes."

**Final Answer**: Polyribosomes (or polysomes).

---