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Bt toxin is...

Bt toxin is

A

Protein

B

Carbohydrate

C

Lipid

D

Enzyme

Text Solution

Verified by Experts

The correct Answer is:
A
Protein
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Explore conceptually related problems

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.

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

The protein products of the following Bt toxin genes cryIAc and cryIIAb are responsible for controlling:

Crystals of Bt toxin produced by some bacteria do not kill the bacteria themselves because (A) Bacteria are resistant to toxin (B) Toxin is immature (C) Toxin is inactive (D) Bacteria encloses toxin in special sac

Strategy used to prevent ņematode infection of tobacco roots is (A) Use of agrochemicals (B) Bt toxin gene (C) Gene mutation (D) RNA interference

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

Bt toxin have been expressed in plants in order to provide resistance against i. Lepidopterans and fungi ii. Animals and bacteria iii. Bacteria and fungi iv. Coleopterans and dipterans v. Lepidopterans

Which of the following statements is not correct? (A) Most bt toxins are insect group specific (B) RNAi takes place in all eukaryotic as well as prokaryotic organisms as a method of cellular defense (C) The recombinant therapeutics do not include unwanted immunological responses in humans (D) Adult- onset diabetes can be controlled by taking insulin at regular intervals

Bt cotton is resistant to pest, such as lepidopteron, dipterans and coleopterans. Is Bt cotton also resistant to other pests as well ?

Bt cotton is not (A) a GM plant (B) Insect resistant (C) a bacterial gene expressing system (D) resistant to all pesticides

KUMAR PRAKASHAN-BIOTECHNOLOGY AND ITS APPLICATIONS-Section - F (Multiple Choice Questions (MCQS FROM .DARPAN. BASED ON TEXTBOOK ))
  1. Which of the following has not been synthesized by DNA technology (A...

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  2. Disorders in which B-lymphocytes are not formed is

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  3. Bt toxin is

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  4. Green revolution succeeded in increasing the yield of the crop by a fa...

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  5. alpha-1 antitrypsin is (A) An antacid (B) An enzyme (C) Used to treat...

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  6. Transgenic hirudin is obtained from

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  7. Which transgenic animal has been given human genes for organ transplan...

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  8. Which of these is used as a vector for gene therapy in SCID and gene c...

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  9. Find the odd one out

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  10. C-peptide of human insulin is (A) a part of mature insulin molecule (...

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  11. Gene therapy first used in the treatment of

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  12. Which one of the following is method of gene silencing

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  13. T-DNA for gene transfer is present in (A) Bacillus thuringiensis (B)...

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  14. Continuous addition of sugars in fed batch fermentation is done to (...

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  15. Genetically engineered human insulin is called : (A) Humulin (B) Hae...

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  16. An enzyme produced commercially from Saccharomyces cerevisiae (A) Lac...

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  17. Fermentation ability of yeast is due to (A) Amylase (B) Galactase (C)...

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  18. Enzyme not used in detergents are (A) Lipases (B) Proteases (C) Amyla...

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  19. Anticoagulant hirudin is found in (A) snake (B) Lizard (C) Leech (D) ...

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  20. rRNA is synthesized in (A) Nucleus (B) Nucleolus (C) Cytoplasm (D) E...

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