Multiple Choice Questions

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Kohler and Milstein developed biotechnology for :

  • monoclonal antibodies

  • steroid synthesis

  • immobilization of enzymes

  • myeloma


A.

monoclonal antibodies

Monoclonal antibodies are monospecific antibodies that are made by identical immune cells that are all clones of a unique parent cell.

In 1975, Georges Kohler and Cesar Milstein succeeded in making fusions of myeloma cell lines with B cells to produce hybridomas that made antibodies to known antigens. These are pure, high affinity antibodies, specific for an antigen which are obtained outside the body from clonal cultures of hybridoma cells.


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The polymerase chain reaction1 (PCR) is a technique that is used for

  • in vivo replication of specific DNA sequence using thermostable DNA polymerase

  • in vitro synthesis of mRNA

  • in vitro replication of specific DNA sequence using thermostable DNA polymerase

  • in vivo synthesis of mRNA

  • in vivo synthesis of mRNA


In lysogenic phase which of the following takes place?

  • Phage DNA integrated with host genome and does not multiplied

  • Phage DNA does not integrate with host genome

  • Phage DNA integrates with host genome and bacterial cell does not lyse

  • Phage DNA integrated with host DNA and multiplied


Hybridoma technology is used to :

  • kill the cancer cells

  • formation of somaclonal antibodies

  • formation of somatic hybrids

  • formation of antibiotics


e -DNA is formed from m-RNA by which enzyme:

  • restriction endonuclease

  • reverse transcriptase

  • DNA polymerase

  • RNA polymerase


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The first recombinant DNA was constructed by linking an antibiotic resistant gene with the native plasmid of V

  • Escherichia coli

  • Salmonella typhimurium

  • Clostridium butylicum

  • Acetobacter aceti

  • Acetobacter aceti


Bioreactors are useful in

  • Separation and purification of a product

  • Processing of large volumes of culture

  • Micro-injection

  • Isolation of genetic material

  • Isolation of genetic material


Plasmid is

  • small extrachromosomal circular self replicating DNA that can carry genes into host organism

  • bacteriophage

  • DNA found in mitochondria

  • DNA incorporated in bacterial chromosome


Introduction of foreign genes for improving genotype is

  • biotechnology

  • vernalization

  • tissue culture

  • genetic engineering


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Science of engineering and technology applied to life sciences is

  • Biotechnology

  • Genetic engineering

  • Pathology

  • Biological science


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