Crystals of Bt toxin produced by some bacteria do not kill bacteria themselves because

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10.Biotechnology and its Application

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Crystals of $Bt$ toxin produced by some bacteria do not kill the bacteria themselves because

A

toxin is inactive:

B

toxin is immature:

C

bacteria are resistant to the toxin

D

bacteria encloses toxin in a special sac.

Solution

$(a)$ toxin is inactive:

In bacteria, the toxin is present in an inactive form, called prototoxin, which gets converted into active form when it enters the body of an insect.

Standard 12

Biology

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