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Biotechnology : Principles and Processes

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Biology

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Biology

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CBSE Gujarat Board Haryana Board

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Class 10 Class 12

Stirred -tank bioreactors have been designed for 

  • the addition of preservatives of the product

  • purification of the product

  • ensuring anaerobic conditions in the culture vessel

  • availability of oxygen throughout the process


D.

availability of oxygen throughout the process

The most common type of aerobic bioreactor in use today is the stirred tank- reactor, which may feature a specific internal configuration designed to provide a specific circulation pattern. The stirred tank bioreactor have been designed for the availability of oxygen throughout the processes.

The most common type of aerobic bioreactor in use today is the stirred tank- reactor, which may feature a specific internal configuration designed to provide a specific circulation pattern. The stirred tank bioreactor have been designed for the availability of oxygen throughout the processes.

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Name the soil bacterium which contain gene for production of endotoxins.

Bacillus thuringiensis.
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What are BACs and YACs ?

BACs and YACs are artificial chromosomes from bacteria and yeast used for efficient gene transfer and gene sequencing.
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Define recombinant DNA.

Recombinant DNA is the artificially created DNA which incorporates DNA segments from different sources into one.
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What is genetic engineering ?

Genetic engineering is a technique for artificially and deliberately modifying DNA (genes) to suit human needs. It is used to change the genetic makeup of the cells by using Recombinant DNA technology 
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What is the role of restriction endonuclease ?

Restriction endonucleases are specific enzymes which can cleave double stranded DNA at specific sites called recognition sequences. Restriction endonucleases provide protection to the bacteria by restricting the growth of bacteriophages. They also serve as tools for Recombinant DNA technology.

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