Question
Crystals of Bt-toxin produced by some bacteria do not kill the bacteria themselves because(a) Bacteria are resistant to the toxin(b) Toxin is immature(c) Toxin is inactive(d) Bacteria encloses toxin in a special sac
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A: (c) Toxin is inactive Show more…
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Crystals of Bt toxin produced by some bacteria do not kill the bacteria themselves because - (a) bacteria are resistant to the toxin (b) toxin is immature; (c) toxin is inactive: (d) bacteria encloses toxin in a special sac.
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Bt-toxin is insecticidal because (a) Activated toxin binds to the surface of midgut epithelial cells and creates pores that causes swelling and lysis and eventually cause death of the insect. (b) It decreases the growth of the nervous system of the insect. (c) It makes the insects unable to fly (d) It kills insects by affecting its blood flow.
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