Bioreactor is a vessel/device in which

Options

A. atomic reactor
B. large vessel to grow cells
C. BOD incubator
D. COD incubator

Answer

### Step-by-Step Solution:

1. **Definition of Bioreactor**: A bioreactor is a vessel or device designed to support a biologically active environment. It is primarily used for growing cells or microorganisms.

2. **Purpose of a Bioreactor**: The main purpose of a bioreactor is to facilitate chemical processes that involve biological organisms. This includes the cultivation of various types of cells, such as bacterial cells, yeast, and animal cells.

3. **Components of a Bioreactor**: A bioreactor provides the necessary conditions for cell growth, including the right temperature, pH, oxygen levels, and nutrient supply. These conditions are crucial for maintaining a healthy environment for the cells.

4. **Applications of Bioreactors**: Bioreactors are used in various applications, including the production of pharmaceuticals, enzymes, and biofuels. They are essential in biotechnology and industrial microbiology for producing desired products from biological organisms.

5. **Types of Organisms Cultured**: In a bioreactor, you can grow different types of organisms, including bacteria, yeast, and animal cells, depending on the desired outcome of the process.