Large scale production of biotechnological products involves use of

Options

A. bioreactor/fermenter
B. electrophoresis
C. RFLP
D. PCR

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks about the equipment used for the large-scale production of biotechnological products.

2. **Identifying Key Terms**: The options provided are bioreactor, fermentor, electrophoresis, RFLP, and PCR. It is important to understand what each of these terms means in the context of biotechnology.

3. **Analyzing the Options**:
- **Bioreactor/Fermentor**: These are vessels designed for growing microorganisms or cells under controlled conditions. They are essential for large-scale cultivation and production of biotechnological products, typically involving aerobic processes.
- **Electrophoresis**: This technique is used for separating DNA, RNA, or proteins based on their size and charge. It is not used for production but rather for analysis.
- **RFLP (Restriction Fragment Length Polymorphism)**: This is a technique used for analyzing the length of DNA fragments after digestion with restriction enzymes. It is not directly involved in production.
- **PCR (Polymerase Chain Reaction)**: This is a method used to amplify specific DNA sequences. While important in genetic research, it is not used for large-scale production.

4. **Conclusion**: Since the question focuses on large-scale production, the correct answer is the bioreactor or fermentor, as they are specifically designed for cultivating microorganisms on a large scale.

5. **Final Answer**: The large-scale production of biotechnological products involves the use of bioreactors or fermentors.