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Biotechnology and Its Applications

Multiple Choice Questions

71. Golden rice is a transgenic crop of the future with the following improved trait:

Insect resistance
High lysine (essential amino acid) content
High protein content
High vitamin-A content

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72.

Crystals of Bt toxin produced by some bacteria do not kill the bacteria themselves because

bacteria are resistant to the toxin
toxin is immature
toxin is inactive
bacteria encloses toxin in a special sac

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73. The protein encoded in which gene control boll worm.

CryIAc
CryIIAb
Both (A) and (B)
CryIIAb

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74. The protein encoded by which gene control corn borer

CryIAc
CryIIAb
CryIAb
CryIIAc

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Long Answer Type

75.

Digrammatically represent the experimental steps in cloning and expressing an human gene (say the gene for growth hormone) into a bacterium like E. coli?

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Short Answer Type

76.

Mention the type of host cells suitable for the gene guns to introduce an alien DNA.

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77.

State how Agrobacterium tumifaciens has been made a useful cloning vector to transfer DNA to plant cells.

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78.

How are 'sticky ends' formed on a DNA strand? Why are they so called?

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79.

How did the process of RNA interference help to control the nematode from infecting the roots of tobacco plants?

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80.
What is Biopiracy?

Biopiracy is the use of bio-resources by multinational companies and other organisations without proper authorisation from the countries and people concerned without compensatory payment.

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