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The Bt toxin does not kill the Bacillus because the Bt toxin protein exist as inactive ________(a) lipid(b) protoxins(c) protein(d) carbohydrateThe question was asked during an interview.My query is from Biotechnology Applications in portion Biotechnology and its Applications of Biology – Class 12

Answer» CORRECT answer is (b) protoxins

The explanation: The Bacillus is not killed by its own BT TOXIN because this Bt toxin protein EXISTS as inactive protoxins in it. This toxin converts into an active form in an ALKALINE pH. This later on form crystals which lead to the death of that insect.


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