हिंदी
कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Describe briefly the following: Bioreactors

Advertisements
Advertisements

प्रश्न

Describe briefly the following:

Bioreactors

विस्तार में उत्तर
Advertisements

उत्तर

Bioreactors can be thought of as vessels in which raw materials are biologically converted into specific products, individual enzymes, etc., using microbial plant, animal, or human cells. A bioreactor provides the optimal conditions for achieving the desired product by providing optimum growth conditions (temperature, pH, substrate, salts, vitamins, oxygen). The most commonly used bioreactor is the stirring type. Stirred-tank reactors are usually cylindrical or have a curved base. This helps mix the material inside the reactor. Stirrers not only mix the material inside the reactor but also ensure the availability of oxygen everywhere in the reactor. Every bioreactor has an agitator system. It also has an oxygen delivery system, foam control system, temperature control system, and pH control device. The reaction is controlled by a system and sampling, which allows small volumes of the cultured product to be periodically removed.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 9: Biotechnology : Principles and Processes - EXERCISES [पृष्ठ १७६]

APPEARS IN

एनसीईआरटी Biology [English] Class 12
अध्याय 9 Biotechnology : Principles and Processes
EXERCISES | Q 10. (b) | पृष्ठ १७६
नूतन Biology [English] Class 12 ISC
अध्याय 11 Principles and Processes of Biotechnology
NCERT EXERCISES WITH ANSWERS | Q 9. (ii) | पृष्ठ ५३५

संबंधित प्रश्न

Suggest and describe a technique to obtain multiple copies of a gene of interest in vitro.


Draw a labelled sketch of sparged-stirred-tank bioreactor. Write its application.


From what you have learnt, can you tell whether enzymes are bigger or DNA is bigger in molecular size? How did you know?


Can you recall meiosis and indicate at what stage recombinant DNA is made?


Explain briefly:

PCR


Answer the following question:
Describe the formation of recombinant DNA by the action of EcoRI.


______ plays an important role in blood clotting.


PCR and restriction fragment length polymorphism are the methods for ______.


A single strand of nucleic acid tagged with a radioactive molecule is called ______.


Blood stains are found at the site of a murder. It DNA profiling technique is to be used for identifying the criminals, which of the following is ideal for use?


The first step in recombinant DNA technology is


During the purification process for recombinant DNA technology, the addition of chilled ethanol precipitates out ______.


An antibiotic resistance gene in a vector usually helps in the selection of ______.


Which of the following steps are catalysed by Taq DNA polymerase in a PCR reaction?


Illustrate the design of a bioreactor. Highlight the difference between a flask in your laboratory and a bioreactor which allows cells to grow in a continuous culture system.


Bioreactors are the containment vehicles of any biotechnology-based production process. For large scale production and for economic reasons the final success of biotechnological process depends on the efficiency of the bioreactor.

Answer the following questions w.r.t. the given paragraph:

  1. List the operational guidelines that must be adhered to so as to achieve optimisation of the bioreactor system. Enlist any four.
  2. Mention the phase of the growth we refer to in the statement "Optimisation of growth and metabolic activity of the cells".
  3. Is the biological product formed in the bioreactor suitable for the intended use immediate? Give reason in support of your answer.

Which of the following statements is incorrect?


Upon exposure to UV radiation, DNA stained with ethidium bromide will show ______.


What is the primary definition of recombinant DNA technology?


In agarose gel electrophoresis, why do DNA fragments move toward the positive electrode?


Which of the following are direct methods used for introducing recombinant DNA into host cells besides chemical transformation?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×