CLASS 12 BIOLOGY CHAPTER 12-BIOTECHNOLOGY AND ITS APPLICATIONS

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Question1. Crystals of Bt toxin produced by some bacteria do not kill the bacteria themselves because − (a) bacteria are resistant to the toxin (b) toxin is immature: (c) toxin is inactive: (d) bacteria encloses toxin in a special sac. Solution :toxin is inactive: In bacteria, the toxin is present in an inactive form, called prototoxin, …

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