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Biotechnology : Principles And Processes

Question
CBSEENBI12002638
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What is true about Bt toxin

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

  • Bt protein exists as active toxin in the bacillus

  • The activated toxin enters the ovaries of the pets to sterilise it and thus prevent its multiplication

  • The concerned Bacillus has antitoxins

Solution

A.

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

Bacillus thuringiensis toxin is an inactive protoxin, which gets converted into an active form in the insect gut. It works as an insecticide.

Some More Questions From Biotechnology : Principles and Processes Chapter

What are the different tools in Recombinant DNA technology?

Give the full form of PCR. Who developed it ?

What is the source of DNA polymerase i.e., Taq polymerase ?

Define “melting of target DNA”.

What would be the molar concentration of human DNA in a human cell ? Consult your teacher.

Do eukaryotic cells have restriction endonucleases ? Justify your answer.

From what you have learnt, can you tell whether enzymes are bigger or DNA is bigger in molecular size. How did you know ?

Expand EFB.

What are two core techniques that enabled birth of biotechnology ?

What is genetic engineering? Explain briefly the distinct steps common to all genetic engineering technology.
Or
With the help of diagrams show the different steps in the formation of recombinant DNA by action of restriction endonuclease.

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