Which of the following statements is true reg | vedclass

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(A) The $Bt$ toxin produced by the bacterium $Bacillus$ $thuringiensis$ is initially produced as an inactive protoxin. When an insect ingests this ina

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It enters the alimentary canal of the pest,where the toxic effect leads to the death of the insect.

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(A) The $Bt$ toxin produced by the bacterium $Bacillus$ $thuringiensis$ is initially produced as an inactive protoxin. When an insect ingests this inactive toxin,it enters the alimentary canal (midgut) of the insect. Due to the alkaline $pH$ of the insect's gut,the inactive protoxin is converted into its active form. The active toxin binds to the surface of the midgut epithelial cells and creates pores,causing cell swelling and lysis,which eventually leads to the death of the insect.

Which of the following statements is true regarding the $Bt$ toxin?

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