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

Describe briefly the following: Bioreactors - Biology

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प्रश्न

Describe briefly the following:

Bioreactors

सविस्तर उत्तर
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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.

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पाठ 13: Principles and Processes of Biotechnology - NCERT EXERCISES WITH ANSWERS [पृष्ठ ५३५]

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नूतन Biology [English] Class 12 ISC
पाठ 13 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.


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


State the importance of using a bioreactor.


Prepare a flow chart in formation of recombinant DNA by the action of restriction endonuclease enzyme EcoRI.


Which of the following term used for defining a viral genome incorporated into host DNA?


______ plays an important role in blood clotting.


DNA fragments generated by the restriction endonuclease in a chemical reaction can be separated by ______.


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


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


The first step in recombinant DNA technology is


In PCR, primers are used for ______.


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


During the process of gene amplification using PCR, if a very high temperature is not maintained in the beginning, then which of the following steps of PCR will be affected first?


Rising of dough is due to ______.


Significance of 'heat shock' method in bacterial transformation is to facilitate ______.


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


How is copy number of the plasmid vector related to yield of recombinant protein?


While doing a PCR, ‘denaturation’ step is missed. What will be its effect on the process?


Do biomolecules (DNA, protein) exhibit biological activity in anhydrous conditions?


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.


Read the following paragraph and answer the questions that follow:

Biotechnology revolves around the "gene of interest", with an objective to open various avenues for human welfare in health, medicine, pharma, agriculture etc. using different techniques, tools and processes. One of the breakthroughs of biotechnology in medicine is the gene therapy.
  1. Name the human disease for which the gene therapy was used for the first time.
  2. Explain the steps of gene therapy carried to cure the disease using the lymphocytes of the patient. Why is this therapy not a permanent cure of the disease?
  3. Write the possible permanent cure of the disease by the gene therapy that is in progress. 

Write the scientific name of the source organism of the thermostable DNA polymerase used in PCR.


Which of the following statements is incorrect?


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