Use of biology in industrial process and for improving quality of life is called:
  • Biotechnology
  • Eugenics
  • Microbiology
  • Genetic engineering
Who discovered recombinant DNA (rDNA) technology?
  • James D. Watson
  • Walter Sutton and Avery
  • Stanley Cohen and Herbert Boyer
  • Har Gobind Khorana
Restriction endonuclease
  • Cuts the DNA molecule at specific sites
  • Synthesizes DNA
  • Restricts the synthesis of DNA inside the nucleus
  • Cuts the DNA molecule randomly
Plasmid is a:
  • Extra chromosomal DNA in bacterial cell
  • Fungus
  • Plastid
  • Part of plasma membrane
One of the key factors, which makes plasmid the vector in genetic engineering is that
  • It is resistant to antibiotics.
  • It is resistant to restriction enzymes.
  • It has the ability to carry a foreign gene.
  • It has the ability to cause infection in the host.
For transformation, micro-particles coated with DNA to be bombarded with gene gun are made up of :
  • Silver or Platinum
  • Gold or Tungsten
  • Silicon or Platinum
  • Platinum or Zinc
Two microbes found to be very useful in genetic engineering are
  • Escherichia coli and Agrobacterium tumefaciens
  • Vibrio cholerae and a tailed bacteriophage
  • Diplococcus sp. and Pseudomonas sp.
  • Crown gall bacterium and Caenorhabditis elegans
Gel electrophoresis is used for
  • Construction of recombinant DNA by joining with cloning vectors
  • Isolation of DNA molecules
  • Separation of DNA fragments according to their size
  • Cutting of DNA into fragments
Which one of the following techniques made it possible to genetically engineer living organisms?
  • X-ray diffraction
  • recombinant DNA technique
  • heavier isotope labelling
  • hybridization
Which one of the following is a case of wrong matching?
  • Vector DNA - Site for t-RNA synthesis
  • Somatic hybridisation - Fusion of two diverse cells
  • Callus - Unorganised mass of cell produced in tissue culture
  • Micropropagation - In vitro production of plants in large numbers
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