The most commonly used bioreactor is

Options

A. Stirring type
B. Shuttle based
C. Dome type
D. None of these

Answer

**Step-by-Step Solution:**

1. **Understanding Bioreactors**: A bioreactor is a vessel or container that provides a controlled environment for the growth of microorganisms or cells, allowing for the production of biological products.

2. **Types of Bioreactors**: There are various types of bioreactors, including:
- Stirring type bioreactors
- Shuttle-based bioreactors
- Dome type bioreactors

3. **Identifying the Most Commonly Used Bioreactor**: Among the options provided, the stirring type bioreactor is the most commonly used. This is due to its ability to mix cultures effectively and maintain optimal growth conditions.

4. **Importance of Stirring Type Bioreactors**: Stirring type bioreactors can handle large volumes of cultures (ranging from 100 to 1000 liters) and provide optimal conditions for microbial growth, such as:
- Temperature control
- pH balance
- Supply of nutrients (substrates, salts, vitamins)
- Oxygenation

5. **Conclusion**: Based on the analysis of the types of bioreactors and their applications, the stirring type bioreactor is confirmed as the most commonly used bioreactor.

**Final Answer**: The most commonly used bioreactor is the **stirring type**.

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