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    Question

    The toxin produced by Bacillus thuringensis interferes

    with which part of insect body?
    A Brain Correct Answer Incorrect Answer
    B Gut Correct Answer Incorrect Answer
    C Excretory organs Correct Answer Incorrect Answer
    D Spiracles Correct Answer Incorrect Answer

    Solution

    The toxin produced by Bt is lethal to several orders of insects, including Lepidoptera (butterflies, moths, and skippers), Diptera (flies), and Coleoptera (beetles). The cry proteins in the toxin bind to specific receptors on the membranes of mid-gut (epithelial) cells of the targeted pests, resulting in their rupture.

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