Home
Class 12
BIOLOGY
What is true about Bt toxin?...

What is true about Bt toxin?

A

The inactive protoxin gets converted into active form in the insect gut

B

Bt protein exists as active toxin in the Bacillus

C

The activated toxin enters the ovaries of the pest to sterilise it and thus, prevent its multiplication.

D

The concerned Bacillus has antitoxins

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • Animal Physiology

    TRUEMAN BIOLOGY|Exercise ASSERTION AND REASON|118 Videos

  • Applications of Biology

    TRUEMAN BIOLOGY|Exercise ASSERTION AND REASON|41 Videos

Similar Questions

Explore conceptually related problems

What is true of Bt toxin ?

What is true of Bt toxin?

Bt toxin is

Bt toxin is

Read the following and answer questions from Q.1. to Q.5. given below: Plants having foreign genes in their genome through genetic engineering are called transgenic plants. Genes can be incorporated either through a vector or through direct introduction of DNA. Bt cotton is a genetically modified organism which is pestresistant. It contains gene cry I Ac and cry II Ab of Bacillus thuringiensis. It is used to control lepidopterans, coleopterans and dipterans. Bt cotton can resist cotton bollworm and produce higher yields. Cry gene produces cry protein or Bt toxin. It is an endotoxin which remains as protoxin in plants and converted to active toxin after getting ingested by the insects. Alkaline pH of the insect gut solubilizes the protein crystals, the activated toxin creates pores to the mid guts wall of theinsects which cause them to death. What is true about Bt cotton crops?

TRUEMAN BIOLOGY-APPLICATION OF BIOTECHNOLOGY -Multiple Choice Questions
  1. The bacterium Bacillus thuringiensis is widely used in contemporary bi...

    Text Solution

    |

  2. The genetic defect- Adenosine Deaminase deficiency may be cured perman...

    Text Solution

    |

  3. What is true about Bt toxin?

    Text Solution

    |

  4. Blood stains ar found at the site of a murder. If DNA profiling techni...

    Text Solution

    |

  5. Some of the characteristics of Bt cotton are

    Text Solution

    |

  6. An improved variety of transgenic basmati rice

    Text Solution

    |

  7. Which of the following is a transgenic plant?

    Text Solution

    |

  8. The problem of blindness in poor countries can be taken care of by usi...

    Text Solution

    |

  9. Alec Jeffreys developed the DNA fingerprinting technique. The probe he...

    Text Solution

    |

  10. Which of the following is correctly matched ?

    Text Solution

    |

  11. Maximum number of existing transgenic animals is of

    Text Solution

    |

  12. Bacillus thuringiensis forms protein crystals which contain insecticid...

    Text Solution

    |

  13. Silencing of mRNA has been used in producing transgenic plants resista...

    Text Solution

    |

  14. Thermostable enzymes 'Taq and Pfu' isolated from thermophilic bacteria...

    Text Solution

    |

  15. During the processing of the prohormone ''proinsulin'' into the mature...

    Text Solution

    |

  16. Bt toxin is not toxic to human beings as

    Text Solution

    |

  17. Basic principle for developing transgenic plants and animals is to int...

    Text Solution

    |

  18. In plant tissue culture, the callus tissues can be regenerated into co...

    Text Solution

    |

  19. The first clinical gene therapy was given for treating :

    Text Solution

    |

  20. Tobacco plants resistant to a nematode have been developed by the in...

    Text Solution

    |