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Toxic content of B. thuringiensis is _______ in nature.

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in Biology – Class 12 by (271k points)
Toxic content of B. thuringiensis is _______ in nature.

(a) protein

(b) steroid

(c) amino acid

(d) alkaloid

The question was asked in an international level competition.

I'd like to ask this question from Biotechnology Applications in section Biotechnology and its Applications of Biology – Class 12

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Right answer is (a) protein

For explanation I would say: The toxic content of B. thuringiensis consists of protoxins. These protoxins are protein in nature. These are cry proteins that kill the insect by forming crystals in its gut. Protoxins are endotoxins which can be used as biopesticides.

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