Bacillus thuringiensis produces inssecticidal proteins, called Bt toxins. Explain how Bt toxin works in insects and kill them.

Bt toxins are not toxic to bacillus and Bt cotton plant but toxic to insects. Explain.

Bacillus thuringiensis (Bt) strains have been used for designing novel

Bt toxin is produced by Bacillus thuringiensis that can kill certain insects. Why the toxin produced by the bacterium is nontoxic to it?