NEET Biology - New - Biotechnology And Its Applications

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Question - 1

Which of the following is commonly used as a vector for introducing a DNA fragment in human lymphocytes?

  • A X phage
  • B Ti plasmid
  • C Retrovirus
  • D PBR 322

Question - 2

Which kind of therapy was given in 1990 to a four year old girl with Adenosine Deaminase deficiency (ADA)?

  • A Gene therapy
  • B Chemo therapy
  • C Immunotherapy
  • D Radiation therapy

Question - 3

The two polypeptides of human insulin are linked together by :

  • A Phosphodiester bond
  • B Covalent bond
  • C Disulphide bridges
  • D Hydrogen bonds

Question - 4

Which part of the tobacco plant is infected by Meloidogyne incognitia

  • A Leaf
  • B Stem
  • C Root
  • D Flower

Question - 5

In Bt Cotton, the Bt toxin present in plant tissue as protoxin is converted into active toxin due to:

  • A Alkaline PH of the insect gut
  • B Acidic pH of the insect gut
  • C Action of gut microorganism
  • D Presence of conversion factors in insect gut

Question - 6

Tobacco plant resistant to a nematode have been developed by the introduction of DNA that produced in the host cells:

  • A Both sense and anti-sense RNA
  • B A particular hormone
  • C An antifeedant
  • D A toxic protein

Question - 7

The first clinical gene therapy was given for treating:

  • A Diabetes mellitus
  • B Chicken pox
  • C Rheumatoid arthritis
  • D Adenosine deaminase deficiency

Question - 8

The silencing of mRNA has been used in producing transgenic plants resistant to :

  • A Boll worms
  • B Nematodes
  • C White rusts
  • D Bacterial blights

Question - 9

Bacillus thuringiensis forms protein crystals which contain insecticidal protein. This protein:

  • A Binds with epithelial cells of midgut of the insect pest ultimately killing it
  • B Is coded by several genes including the gene cry
  • C Is activated by acid pH of the foregut of the insect pest
  • D Does not kill the carrier bacterium, which is itself resistance to its toxin

Question - 10

Which one of the following is now being commercially produced by biotechnological procedures?

  • A Nicotine
  • B Morphine
  • C Quinine
  • D Insulin