How many RNA polymerase are present in a bacterial system ?

Options

A. 4
B. 2
C. 1
D. 3

Answer

To determine how many RNA polymerases are present in a bacterial system, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Context**:
- Bacteria are classified as prokaryotes. It is essential to recognize the difference between prokaryotic and eukaryotic cells when discussing RNA polymerases.

2. **Identify RNA Polymerases in Eukaryotes**:
- In eukaryotic cells, there are three types of RNA polymerases: RNA polymerase I, II, and III. Each of these polymerases has specific functions in transcribing different types of RNA.

3. **Identify RNA Polymerases in Prokaryotes**:
- In contrast, prokaryotes, which include bacteria, have a simpler system. They possess only one type of RNA polymerase that is responsible for synthesizing all types of RNA (mRNA, tRNA, and rRNA).

4. **Conclusion**:
- Since bacteria are prokaryotes, they have only **one RNA polymerase** that handles all transcription processes.

5. **Final Answer**:
- Therefore, the correct answer to the question is **1**.