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28/10/2021 2:05 pm
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Bacillus thuringiensis forms protein crystals which contain insecticidal protein.
(1) is activated by acid pH of the foregut of the insect pest.
(2) binds with epithelial cells of midgut of the insect pest ultimately killing it
(3) does not kill the carrier bacterium which is itself resistant to this toxin
(4) is coded by several genes including the gene cry
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28/10/2021 2:06 pm
Correct answer: (2) binds with epithelial cells of midgut of the insect pest ultimately killing it