2024 Re-NEET Biotechnology and its ApplicationsMechanism of Bt toxin action Medium Question 13 of 86 in Biotechnology and its Applications

The Bt toxin in genetically engineered Bt cotton kills the pest by:

A Creating pores in the midgut
B Damaging the respiratory system
C Degenerating the nervous system
D Altering the pH of body fluids

The answer is A.

Solution

The activated Bt toxin binds to the surface of midgut epithelial cells in the insect, creating pores that cause cell swelling and lysis, ultimately killing the insect.

Concept Mechanism of Bt toxin action

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86 questions from this chapter have appeared across 26 exam years.