Question

Which of the following statements is incorrect?

(1) A bio-reactor provides optimal growth conditions for achieving the desired product 

(2) Most commonly used bio-reactors are of stirring type 

(3) Bio-reactors are used to produce small scale bacterial cultures 

(4) Bio-reactors have an agitator system, an oxygen delivery system and foam control system

Answer 1

Correct option is (3) Bio-reactors are used to produce small scale bacterial cultures   

The statement (3) is incorrect because bioreactors are used for processing of large volumes (100 – 1000 litres) of culture. 

Small volume cultures cannot yield appreciable quantities of products. To produce in large quantities the development of bioreactors is required.