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Question
The trigger for activation of toxin of bacillus thuringlensis is ______.
Options
Acidic PH of stomach
high temperature
Alkaline PH of gat
Mechanical action in the insect gat
Solution
The trigger for activation of toxin of bacillus thuringlensis is alkaline PH of gat.
Explanation:
Bt toxins are originally inactive protoxins, but due to the alkaline PH of the gat, which solubilizes the crystals, they become active after consumption by the insect. As a result, a high PH value is necessary to make Bt toxins active. When temperatures are high and the PH is acidic, Bt toxins remain insoluble and inactive.
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