Production on an industrial scale requires growing microbes in very large vessels is called

Options

A. Fermenter
B. Autoclave
C. Laminar Air Flow
D. All of the above

Answer

To solve the question, "Production on an industrial scale requires growing microbes in very large vessels is called," we will analyze the options provided and determine the correct answer step by step.

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for the term used to describe large vessels used for growing microbes on an industrial scale.

2. **Analyzing the Options**:
- **A. Fermenter**: A fermenter is indeed a large vessel (or tank) specifically designed to provide optimal conditions for the growth of microbes. It allows for the control of temperature, pH, CO2 concentration, and oxygen concentration, which are crucial for microbial growth.
- **B. Autoclave**: An autoclave is a device used for sterilization, not for growing microbes. It operates at high temperatures and pressure to sterilize equipment and media.
- **C. Laminar Airflow**: This is a system that provides a sterile working environment by filtering air. It does not grow microbes but ensures a clean area for working with them.
- **D. All of the above**: This option suggests that all the previous options are correct, but since only one of them (fermenter) is relevant to the question, this option cannot be correct.

3. **Conclusion**: Based on the analysis, the correct answer is **A. Fermenter**. This is the vessel specifically designed for the industrial-scale growth of microbes.

### Final Answer:
**A. Fermenter**