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STD 12 - 10. biotechnology and its application — Biology STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceBiologySTD 12 - 10. biotechnology and its application1 Mark
MCQ
Why is $B t$ toxin not toxic to human beings?
  • A
    The toxin recognises only insect specific targets
  • B
    Bttoxin activation requires temperature above the human body temperature
  • C
    Bttoxin formation froms pro Btstate which requires $pH$ lower than one present in human stomach
  • ✓
    Conversion of pro Bt to Btstate takes place only in highly alkaline condition
✓

Answer

Correct option: D.
Conversion of pro Bt to Btstate takes place only in highly alkaline condition
d
Bttoxin is not toxin to human being because conversion of pro Bt to Btstate takes place only in highly alkaline conditions

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