Q.

Activation of Bt protoxins takes place in:

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Bacterial cell

Mouth of insect

Gut of insect

Genetically modified plant

answer is C.

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Detailed Solution

The Bt toxin protein exist as inactive protoxins but once an insect ingests the inactive toxin, it is converted into an active form of toxin due to the alkaline pH of the gut which solubilise the crystals.

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