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Bt toxins are...

Bt toxins are

A

intracellular lipids

B

intracellular crystalline proteins

C

extracellular crystalline proteins

D

intracellular polysaccharides

Text Solution

Verified by Experts

The correct Answer is:
B
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Assertion: The protein encoded by cry I Ab is not effective in control of cotton bollowrms Reason :Most Bt toxin are insect group specific

A : Bt toxin are protein crystals containing insecticidal protein R : B. thuringiensis forms these protein crystals throughout continuously during their growth period.

Bt toxin is a

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In Bt cotton, the Bt toxin present in plant tissue as pro-toxin is converted into active toxin due to

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

NCERT FINGERTIPS-BIOTECHNOLOGY AND ITS APPLICATION-Biotechnology And Its Application
  1. Bt toxin genes have been expressed in plants in order to provide resis...

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  2. Bacillus thuringiensis forms protein crystals which contain insectidic...

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  3. Bt toxins are

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  4. Bt toxin protein crystals present in bacterium Bacillus thuringiensis,...

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  5. What causes the inactive form of Bt toxin i.e., protoxin to get conver...

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  6. Bt toxin kills insects by

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  7. The Bt toxin is not human beings because

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  8. Which of the following genes were introduced in cotton to protect it f...

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  9. CryllAb and crylAb produce toxins that control

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  10. Bt corn been made resistant from corn borer disease by intoduction of ...

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  11. Some of the characteristics of Bt cotton are

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  12. The process of RNA interference has been used to make tobacco plant re...

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  13. Which of the following is the nematode that attacks the roots of tobac...

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  14. RNA interference involves

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  15. Which of the following statements are correct regarding the process of...

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  16. The transgenic plant 'Flavr Savr' tomato carries an artificial for

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  17. Flavr Savr' variety of tomato which remains fresh for a longer period ...

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  18. Read the given statements and select the correct option Statement 1 ...

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  20. Study the following statements and select the incorrect ones. (i) 'B...

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