Biology - Biotechnology : Principles and Processes

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Question - 1

The European Federation of Biotechnology defines biotechnology as

  • A Deals with techniques of using live organisms to produce products and processes useful to humans
  • B The processes that use genetically modified to achieve large scale production
  • C Invitro fertilisation, production of a vaccine and correcting a defective gene
  • D The integration of natural science and organisms, cells, parts thereof, and molecular analogues for products and services.

Question - 2

Recombinant DNA is obtained by cleaving the pro DNA by

  • A Restriction endonucleases
  • B Exonucleases
  • C Ligases
  • D Primase

Question - 3

Genetic engineering is possible, because

  • A The phenomenon of transduction in bacteria is well understood
  • B We can see the DNA by electron microscope
  • C We can cut DNA at specific sites by endonqcleases like DNAs (1)
  • D Restriction endonucleases purified from bacteria can be used in vitro

Question - 4

Which one is related to genetic engineering?

  • A Mutation
  • B Plasmid
  • C Plastid
  • D Heterosis

Question - 5

Producing a giant mouse in the laboratory was possible through

  • A Gene mutation
  • B Gene manipulation
  • C Gene synthesis
  • D Gene duplication

Question - 6

Maximum number of bases in plasmids discovered so far is

  • B 5000 KILOBASE
  • C 500 KILOBASE

Question - 7

Plasmid is

  • A Fragment of DNA which acts as vector
  • B A fragment which joins two genes
  • C mRNA which acts as carrier
  • D An autotrophic fragment

Question - 8

In bacteria, the plasmid is

  • A Extra chromosomal material
  • B Main DNA
  • C Non functional DNA
  • D Repetitive gene

Question - 9

 Restriction endonucleases

  • A Are present in mammalian cells for degradation of DNA when the cell dies
  • B Are used for in vitro synthesis of DNA
  • C Are used in genetic engineering for ligating two DNA molecules
  • D Are synthesised by bacteria as part of their defence mechanism

Question - 10

Production of a human protein in bacteria by genetic engineering is possible because

  • A Bacterial cell can carry out the RNA splicing reactions
  • B The human chromosome can replicate in bacterial cell
  • C The mechanism of gene regulation is identical in humans and bacteria
  • D The genetic code is universal