Home
Class 12
BIOLOGY
The trigger for activation of toxin of B...

The trigger for activation of toxin of Bacillus thuringiensis is (A) Acidic pH of stomach (B) High temperature (C) Alkaline pH of gut (D) Mechanical action in the insect gut

A

Acidic pH of stomach

B

High temperature

C

Alkaline pH of gut

D

Mechanical action in the insect gut

Text Solution

Verified by Experts

The correct Answer is:
A, C
The trigger for activation of-toxin of Bacillus thuringiensis is alkaline pH of gut which solubilises the crystals(inactive protein is converted into active form).
Promotional Banner

Topper's Solved these Questions

  • BIOTECHNOLOGY AND ITS APPLICATIONS

    KUMAR PRAKASHAN|Exercise Section - E (Solution of NCERT Examplar (Very Short Answer Type Questions))|17 Videos

  • BIOTECHNOLOGY AND ITS APPLICATIONS

    KUMAR PRAKASHAN|Exercise Section - E (Solution of NCERT Examplar (Short Answer Type Questions))|15 Videos

  • BIOTECHNOLOGY AND ITS APPLICATIONS

    KUMAR PRAKASHAN|Exercise Section-D (Textual Exercise )|10 Videos

  • BIOTECHNOLOGY : PRINCIPLES AND PROCESSES

    KUMAR PRAKASHAN|Exercise SECTION - F (MCQs ASKED IN COMPETITIVE EXAM)|78 Videos

  • BOARD QUESTION PAPER MARCH -2020

    KUMAR PRAKASHAN|Exercise Part-B (Section-C)|5 Videos

Similar Questions

Explore conceptually related problems

What triggers activation of protoxin to active Bt toxin of Bacillus thuringiensis in boll worm? (A) Body temperature (B) Moist surface of midgut (C) Alkaline pH of gut (D) Acidic pH of stomach

In Bt cotton, the Bt toxin present in the plant tissue as protoxin is converted into active toxin due to (A) Presence of conversion factors in insect gut (B) Alkaline pH of the insect gut (C) Acidic pH of the insect gut (D) Action of gut microorganisms

Choose the correct option for the toxic protein produced by B. Thuringiensis : (A) it acts in acidic medium and binds to epithelial cells of foregut. (B) it acts in neutral medium and binds to epithelial cells of hindgut. (C) it acts in alkaline medium and binds to epithelial cells of foregut. (D) it acts in alkaline medium and binds to epithelial cells of midgut.

What is true about Bt toxin ? (A) Bt protein exists as active toxin in the Bacillus. (B) The activated toxin enters the ovaries of the pest to sterilize it and thus prevent its multiplication. (C) The concerned Bacillus has antitoxins. (D) The inactive protoxin gets converted into active form in the insect gut.

Which optimum conditions are required to obtained desired products from Bioreactor? (A) Temperature, pH, O_(2) and CO_(2) (B) Temperature, pH, O_(2) and Vitamin (C) Reactant, salts, pH and Density (D) Salts, Vitamin, O_(2) and Pressure

Assertion A: Pollen grains can survive against high temperature, conc acid and base. Reason R: Outer -layer of pollen grain is made up of sporopollenin (A) A and R both are true and R is correct explanation of A (B) A and R both are true, but R is not the explanation of A (C) A is true, R is wrong (D) A is wrong and R is true

Read of the following statements:- (a) Insect resistance in crop plants may be due to morphological, biochemical or playsiological characteristics. (b) Hairy leaves in cotton are resistant to cereals jassids. (c) Smooth leaves and nectar-less cotton varieties do not attract bollworms. (d) In maize, high asparatic acids, low nitrogen and sugar leads to resistance to stemborers. Choose correct statements :-