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Bt Cotton and Insecticidal Properties

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Questions and Answers

Which insects are killed by the proteins produced by certain strains of Bacillus thuringiensis?

Corn borers and tobacco budworms

Lepidopterans and coleopterans (correct)

Beetles and flies

Mosquitoes and armyworms

What happens to the Bt toxin protein after an insect ingests it?

It is neutralized by the alkaline pH of the gut

It binds to the surface of midgut epithelial cells

It remains inactive

It is converted into an active form of toxin (correct)

Which genes code for the Bt toxin that controls cotton bollworms?

cryIAb and cryIAc

cryIAc and cryIAb

cryIAc and cryIIAb (correct)

cryIAb and cryIIAb

Bt Cotton and Insecticidal Properties

Choose a study mode

Podcast

Questions and Answers

Which insects are killed by the proteins produced by certain strains of Bacillus thuringiensis?

What happens to the Bt toxin protein after an insect ingests it?

Which genes code for the Bt toxin that controls cotton bollworms?

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