Which one of the following conditions is not involved for achieving the desired product in bioreactor?
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → Sun light
A bioreactor is a large vessel (100-1000 litres) in which microbial, plant, animal or human cells are grown to make a desired product in large amounts. It gives the optimum growth conditions: temperature, pH, substrate, salts, vitamins and oxygen.
(1) Temperature — A condition controlled in a bioreactor. The cells grow best at a fixed temperature, so a temperature control system is part of the bioreactor.
(2) Sun light — Not a condition of a bioreactor. The cells grown in a bioreactor get their energy from the substrate (nutrients) given to them. Sunlight is not one of the growth conditions it provides.
(3) Vitamins — A condition provided in a bioreactor. Vitamins are part of the nutrients the cells need to grow.
(4) Oxygen — A condition provided in a bioreactor. Oxygen is supplied through a sparger (oxygen delivery system), and a stirrer mixes it evenly.
NCERT Extract:
Obtaining the Foreign Gene Product – …
