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NEET Exam Model Paper 2

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Question : 46

Total: 180

Why does the toxin protein crystals of Bacillus thuringiensis not kill the bacteria?

The toxin cannot pass through bacterial cell wall
It is produced as protoxin which gets activated to toxin in the insect gut
The toxin gets activated to protoxin in the insect gut
The toxin cannot pass through the bacterial cell membrane

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