Question

Choose the incorrect statement among the following

• A. The process of separation and purification of the product is called downstream processing.
• B. Bioreactors are used for the production of large quantities of enzymes.
• C. Most commonly used bioreactors are stirring type.
• D. Small volume cultures can yield appreciable quantities of products.

Hint:

Downstream processing includes steps such as separation, purification, and polishing.
Bioreactors scale up production but need to be large enough for economic viability. Small cultures = lab scale. Large cultures = industrial scale.

Answer 1

The Correct Option is D

Understand each statement. Statement (1):
This is correct. Downstream processing refers to the series of operations involved in the purification and separation of a biotechnological product after the fermentation or cell culture process. Statement (2):
This is also correct. Bioreactors are used in industrial biotechnology for growing organisms under controlled conditions to produce enzymes, hormones, and other substances in large quantities. Statement (3):
This is correct. The most commonly used bioreactors are stirred tank bioreactors, which provide efficient mixing and aeration. Statement (4):
This is incorrect. Small volume cultures are typically used in labs for testing or small-scale research. They cannot yield appreciable or commercial-scale quantities of products. For industrial production, large volume cultures are required.