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

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प्रश्न

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

अति संक्षिप्त उत्तर
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उत्तर

If denaturation of double-stranded DNA does not take place, then primers will not be able to anneal to the template, no extension will take place, hence no amplification will occur.

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अध्याय 11: Biotechnology : Principles and Processes - VERY SHORT ANSWER [पृष्ठ ७८]

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एनसीईआरटी एक्झांप्लर Biology [English] Class 12
अध्याय 11 Biotechnology : Principles and Processes
VERY SHORT ANSWER | Q 7. | पृष्ठ ७८
नूतन Biology [English] Class 12 ISC
अध्याय 13 Principles and Processes of Biotechnology
HIGHER ORDER THINKING SKILLS QUESTIONS (HOTS) | Q 4. | पृष्ठ ५३४

संबंधित प्रश्न

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


Can you list 10 recombinant proteins which are used in medical practice? Find out where they are used as therapeutics (use the internet).


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


Describe briefly the following:

Bioreactors


Explain briefly:

PCR


State the importance of using a bioreactor.


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


Describe the process of amplification of the “gene of interest” using the PCR technique.


In a pathological lab, a series of steps were undertaken for finding the gene of interest. Describe the steps, or make a flow chart showing the process of amplification of this gene of interest.


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


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


Gene Amplification using primers can be done by ______.


PCR proceeds mthree distinct steps governed by temperature, they are in order of ______.


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?


In addition to the Taq polymerase enzyme, which other thermostable DNA polymerases have been isolated to be used in PCR?


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


Which of the following contributed in popularising the PCR (polymerase chain reactions) technique?


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


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


Which of the following should be chosen for best yield if one were to produce a recombinant protein in large amounts?


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


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


Identify and explain steps ‘A’, ‘B’ and ‘C’ in the PCR diagram given below.


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.


Assertion (A): Synthetic oligonucleotide polymers are used during Annealing in a PCR.

Reason (R): The primers bind to the double stranded DNA at their complementary regions.


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.

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