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Karnataka Board PUCPUC Science 2nd PUC Class 12

A protoxin is ______. - Biology

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Question

A protoxin is ______.

Options

  • A primitive toxin

  • A denatured toxin 

  • Toxin produced by protozoa

  • Inactive toxin

MCQ
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Solution

A protoxin is inactive toxin.

Explanation:

A protoxin is a toxin that is inactive. "Protoxin" refers to an inactive B thuringiensis protein crystal containing a poisonous insecticidal protein (Br toxin).

The inert toxin in Bt. toxin is transformed into an active form once ingested by the lay bug due to the gat's alkaline PH, which solubilizes the crystals.

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Chapter 12: Biotechnology and Its Applications - MULTIPLE CHOICE QUESTIONS [Page 83]

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NCERT Exemplar Biology [English] Class 12
Chapter 12 Biotechnology and Its Applications
MULTIPLE CHOICE QUESTIONS | Q 8. | Page 83
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