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Question : The Bt toxin is not human beings because

Answer»

the PRO Bt toxin activationrequires temperature above human body temperature
the Bt toxin RECOGNISES only insect-specific targets
the pro Bt toxin ACTIVATION requires pH lower than that present in human stomach
conversion of pro Bt toxinto Bt toxin takes place in HIGHLY ALKALINE conditions.

Solution :Conversion of pro Bt toxin to Bt toxin placce in highly alkaline conditions which are not present in human stomach. Human stomach is acidic in nature


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