Home
Class 12
BIOLOGY
A protoxin is...

A protoxin is

A

a primitive toxin

B

a denatured toxin

C

toxin produced by Protozoe

D

Inactive toxin.

Text Solution

Verified by Experts

A protein is an inactive toxin. The word pro in protons signifless inactive form
B. thuringlensis forms protein crystal is which contain a toxic insecticidal protein (Bt toxin ).
Bt toxins are initially protoxins but once ingested by insect, the inactive toxin. gets converted into an active form due to the alkaline pH of the put which solution the crystals.
Promotional Banner

Topper's Solved these Questions

  • BIODIVERSITY AND CONSERVATION

    NCERT EXEMPLAR|Exercise Biodiversity And Conservation|62 Videos

  • BIOTECHNOLOGY PRINCIPLES AND PROCESS

    NCERT EXEMPLAR|Exercise Biotechnology Principles And Process|44 Videos

Similar Questions

Explore conceptually related problems

Cry protoxin is changed into toxic state in

The inactive protoxin is activated in the gut of the insect by :

Bt endotoxin that exists as inactive protoxin is converted in to active toxin once bollworm ingests it due to

In Bt cotton the Bt toxin present in plant tissue as protoxin is converted in to active toxin due to

Which type of pH is responsible for conversion of inactive Bt protoxin into active form to toxin

Assertion : Plants having gene from Bacilus thuringiensis are resistant to insects Reason : Theso transgenic plants have receptors which convert protoxin into active toxin.

I. Recombinant DNA technolgy is used to improve crop plants by increasing their productivity, by making them more nutritious and by developing disease resistant II Bt cotton is resistance to bollworm infestation III. Bacillus thuringiensis is not harmed by self cry protein because of its occurrence as protoxin (inactive) V. Protoxin Cry protein is changed into active cry protein in the stomach of insects due to alkaline pH in stomach

What triggers activation of protoxin to active Bt toxin of Bacillus thuringiensis in bollworm?

NCERT EXEMPLAR-BIOTECHNOLOGY AND ITS APPLICATIONS -Biotechnology And Its Applications
  1. Choose the correct option regarding retrovirus

    Text Solution

    |

  2. The site of production of ADA in the body is

    Text Solution

    |

  3. A protoxin is

    Text Solution

    |

  4. Pathophysiology is the

    Text Solution

    |

  5. The trigger for activation of toxin of Bacillus thuringiensis is

    Text Solution

    |

  6. Golden rice is

    Text Solution

    |

  7. In RNAi, genes are silenced using

    Text Solution

    |

  8. The first clinical gene therapy was done for the treatment of

    Text Solution

    |

  9. ADA is an enzyme which is deficient in a genetic disorder SCID. What i...

    Text Solution

    |

  10. Silencing of a gene could be achieved through the use of

    Text Solution

    |

  11. In view of the current food criis, it is said , that we need another g...

    Text Solution

    |

  12. Expand GMO. How is it different from a hybrid?

    Text Solution

    |

  13. Differentiate between diagnostics and therapeutics, Give one example f...

    Text Solution

    |

  14. Give the full form of ELISA, which disease can b e detected using it? ...

    Text Solution

    |

  15. Can a disease be detected before its symptoms appear? Explain the prin...

    Text Solution

    |

  16. Write a short note on biopiracy highlighting the exploitation of devel...

    Text Solution

    |

  17. Many proteins are secreted in their inactive form . This is also true ...

    Text Solution

    |

  18. While creating genetically modified organisms, Genetic barriers are no...

    Text Solution

    |

  19. Why has the Indian parliament cleared the second amendment of the coun...

    Text Solution

    |

  20. Give any two reasons why the patent on Basmati should not have gone to...

    Text Solution

    |