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The trigger for activation of toxin of B...

The trigger for activation of toxin of Bacillus thuringiensis is

A

acidic pH of stomach

B

high temperature

C

alkaline pH of gut

D

mechanical action in the insect gut

Text Solution

Verified by Experts

Bt toxins are initially inactive protoxins but after ingestion b y the insect the these inactive toxin becomes active due to the alkaline pH of the gut which solublise the crystais .
Hence, high pH value is required to make Bt toxins active. Under high temperature and acidic pH, Bt toxins insoluble and inactive.
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NCERT EXEMPLAR-BIOTECHNOLOGY AND ITS APPLICATIONS -Biotechnology And Its Applications
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