The inactive form of Bt toxin is converted to the active form in the insect gut
- by nucleases
- due to alkaline pH
- due to acidic pH
- by proteases
Answer
(2) due to alkaline pH
Solution
Bt toxin protein exists as inactive protoxins, but once an insect ingests the inactive protoxin, it is converted into an active form of toxin due to the alkaline pH of the gut which solubilises the crystals.
Answer: (2)