12th Class
Biology
Biotechnology And Its Applications
question_answer1)
Crystals of Bt toxin produced by some bacteria do not kill the bacteria themselves because:
(a) Bacteria are resistant to strain
(b) Toxin is immature
(c) Toxin is inactive
(d) Bacteria encloses toxin a special sac.
Answer:
(c) Because Bt toxin is present in the form of protoxin in Bacillus bacterium.