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Study the following statements regarding Bt toxins produced by bacterium Bacillus thuringiensis and select the correct one.
- a)Most strains of Bacillus thuringiensis produce proteins that kill certain insects such as lepidopterans, coleopterans and dipterans
- b)Bt toxin proteins do not kill the bacteria themselves because the toxin proteins occur in an inactive form called protoxins
- c)When an insect ingests the inactive Bt toxin, it is converted to an active form of toxin due to alkaline pH of the gut which solubilises the protein toxin crystals
- d)All of these
Correct answer is option 'D'. Can you explain this answer?
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Study the following statements regarding Bt toxins produced by bacteri...
Soil bacterium, Bacillus thuringiensis (Bt) produces proteins that kill certain insects like lepidopterans (tobacco budworm, armyworm), coleopterans (beetles) and dipterans (flies, mosquitoes). Bacillus thuringiensis forms some intracellular protein crystals. These crystals contain a toxic insecticidal protein. The Bt toxin protein exists as inactive toxin and is converted into an active form due to the alkaline pH of the alimentary canal that solubilises the crystals. The activated toxin binds to the surface of midgut epithelial cells and create pores which cause cell swelling and lysis and finally cause death of the insect.
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Study the following statements regarding Bt toxins produced by bacteri...
Bt toxins produced by bacterium Bacillus thuringiensis are widely used in agricultural practices as a natural pesticide. The following statements regarding Bt toxins are correct:
Most strains of Bacillus thuringiensis produce proteins that kill certain insects such as lepidopterans, coleopterans and dipterans: Bt toxins are a group of proteins produced by Bacillus thuringiensis and are toxic to certain insects. Different strains of Bacillus thuringiensis produce different types of Bt toxins, each of which is specific to certain groups of insects.
Bt toxin proteins do not kill the bacteria themselves because the toxin proteins occur in an inactive form called protoxins: Bt toxins are produced by Bacillus thuringiensis in an inactive form called protoxins. These protoxins are not toxic to the bacteria itself, but become toxic when ingested by certain insect pests.
When an insect ingests the inactive Bt toxin, it is converted to an active form of toxin due to alkaline pH of the gut which solubilises the protein toxin crystals: When an insect ingests the inactive Bt toxin, it is solubilized by the alkaline pH of the insect gut, which converts the protoxin to an active form. The activated toxin then binds to the insect gut, causing damage to the gut wall and ultimately killing the insect.
Therefore, option D, "All of these" is the correct answer.
Most strains of Bacillus thuringiensis produce proteins that kill certain insects such as lepidopterans, coleopterans and dipterans: Bt toxins are a group of proteins produced by Bacillus thuringiensis and are toxic to certain insects. Different strains of Bacillus thuringiensis produce different types of Bt toxins, each of which is specific to certain groups of insects.
Bt toxin proteins do not kill the bacteria themselves because the toxin proteins occur in an inactive form called protoxins: Bt toxins are produced by Bacillus thuringiensis in an inactive form called protoxins. These protoxins are not toxic to the bacteria itself, but become toxic when ingested by certain insect pests.
When an insect ingests the inactive Bt toxin, it is converted to an active form of toxin due to alkaline pH of the gut which solubilises the protein toxin crystals: When an insect ingests the inactive Bt toxin, it is solubilized by the alkaline pH of the insect gut, which converts the protoxin to an active form. The activated toxin then binds to the insect gut, causing damage to the gut wall and ultimately killing the insect.
Therefore, option D, "All of these" is the correct answer.
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Study the following statements regarding Bt toxins produced by bacterium Bacillus thuringiensis and select the correct one.a)Most strains of Bacillus thuringiensis produce proteins that kill certain insects such as lepidopterans, coleopterans and dipteransb)Bt toxin proteins do not kill the bacteria themselves because the toxin proteins occur in an inactive form called protoxinsc)When an insect ingests the inactive Bt toxin, it is converted to an active form of toxin due to alkaline pH of the gut which solubilises the protein toxin crystalsd)All of theseCorrect answer is option 'D'. Can you explain this answer?
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Study the following statements regarding Bt toxins produced by bacterium Bacillus thuringiensis and select the correct one.a)Most strains of Bacillus thuringiensis produce proteins that kill certain insects such as lepidopterans, coleopterans and dipteransb)Bt toxin proteins do not kill the bacteria themselves because the toxin proteins occur in an inactive form called protoxinsc)When an insect ingests the inactive Bt toxin, it is converted to an active form of toxin due to alkaline pH of the gut which solubilises the protein toxin crystalsd)All of theseCorrect answer is option 'D'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Study the following statements regarding Bt toxins produced by bacterium Bacillus thuringiensis and select the correct one.a)Most strains of Bacillus thuringiensis produce proteins that kill certain insects such as lepidopterans, coleopterans and dipteransb)Bt toxin proteins do not kill the bacteria themselves because the toxin proteins occur in an inactive form called protoxinsc)When an insect ingests the inactive Bt toxin, it is converted to an active form of toxin due to alkaline pH of the gut which solubilises the protein toxin crystalsd)All of theseCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Study the following statements regarding Bt toxins produced by bacterium Bacillus thuringiensis and select the correct one.a)Most strains of Bacillus thuringiensis produce proteins that kill certain insects such as lepidopterans, coleopterans and dipteransb)Bt toxin proteins do not kill the bacteria themselves because the toxin proteins occur in an inactive form called protoxinsc)When an insect ingests the inactive Bt toxin, it is converted to an active form of toxin due to alkaline pH of the gut which solubilises the protein toxin crystalsd)All of theseCorrect answer is option 'D'. Can you explain this answer?.
Study the following statements regarding Bt toxins produced by bacterium Bacillus thuringiensis and select the correct one.a)Most strains of Bacillus thuringiensis produce proteins that kill certain insects such as lepidopterans, coleopterans and dipteransb)Bt toxin proteins do not kill the bacteria themselves because the toxin proteins occur in an inactive form called protoxinsc)When an insect ingests the inactive Bt toxin, it is converted to an active form of toxin due to alkaline pH of the gut which solubilises the protein toxin crystalsd)All of theseCorrect answer is option 'D'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Study the following statements regarding Bt toxins produced by bacterium Bacillus thuringiensis and select the correct one.a)Most strains of Bacillus thuringiensis produce proteins that kill certain insects such as lepidopterans, coleopterans and dipteransb)Bt toxin proteins do not kill the bacteria themselves because the toxin proteins occur in an inactive form called protoxinsc)When an insect ingests the inactive Bt toxin, it is converted to an active form of toxin due to alkaline pH of the gut which solubilises the protein toxin crystalsd)All of theseCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Study the following statements regarding Bt toxins produced by bacterium Bacillus thuringiensis and select the correct one.a)Most strains of Bacillus thuringiensis produce proteins that kill certain insects such as lepidopterans, coleopterans and dipteransb)Bt toxin proteins do not kill the bacteria themselves because the toxin proteins occur in an inactive form called protoxinsc)When an insect ingests the inactive Bt toxin, it is converted to an active form of toxin due to alkaline pH of the gut which solubilises the protein toxin crystalsd)All of theseCorrect answer is option 'D'. Can you explain this answer?.
Solutions for Study the following statements regarding Bt toxins produced by bacterium Bacillus thuringiensis and select the correct one.a)Most strains of Bacillus thuringiensis produce proteins that kill certain insects such as lepidopterans, coleopterans and dipteransb)Bt toxin proteins do not kill the bacteria themselves because the toxin proteins occur in an inactive form called protoxinsc)When an insect ingests the inactive Bt toxin, it is converted to an active form of toxin due to alkaline pH of the gut which solubilises the protein toxin crystalsd)All of theseCorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for NEET.
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Study the following statements regarding Bt toxins produced by bacterium Bacillus thuringiensis and select the correct one.a)Most strains of Bacillus thuringiensis produce proteins that kill certain insects such as lepidopterans, coleopterans and dipteransb)Bt toxin proteins do not kill the bacteria themselves because the toxin proteins occur in an inactive form called protoxinsc)When an insect ingests the inactive Bt toxin, it is converted to an active form of toxin due to alkaline pH of the gut which solubilises the protein toxin crystalsd)All of theseCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for Study the following statements regarding Bt toxins produced by bacterium Bacillus thuringiensis and select the correct one.a)Most strains of Bacillus thuringiensis produce proteins that kill certain insects such as lepidopterans, coleopterans and dipteransb)Bt toxin proteins do not kill the bacteria themselves because the toxin proteins occur in an inactive form called protoxinsc)When an insect ingests the inactive Bt toxin, it is converted to an active form of toxin due to alkaline pH of the gut which solubilises the protein toxin crystalsd)All of theseCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of Study the following statements regarding Bt toxins produced by bacterium Bacillus thuringiensis and select the correct one.a)Most strains of Bacillus thuringiensis produce proteins that kill certain insects such as lepidopterans, coleopterans and dipteransb)Bt toxin proteins do not kill the bacteria themselves because the toxin proteins occur in an inactive form called protoxinsc)When an insect ingests the inactive Bt toxin, it is converted to an active form of toxin due to alkaline pH of the gut which solubilises the protein toxin crystalsd)All of theseCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Study the following statements regarding Bt toxins produced by bacterium Bacillus thuringiensis and select the correct one.a)Most strains of Bacillus thuringiensis produce proteins that kill certain insects such as lepidopterans, coleopterans and dipteransb)Bt toxin proteins do not kill the bacteria themselves because the toxin proteins occur in an inactive form called protoxinsc)When an insect ingests the inactive Bt toxin, it is converted to an active form of toxin due to alkaline pH of the gut which solubilises the protein toxin crystalsd)All of theseCorrect answer is option 'D'. Can you explain this answer? tests, examples and also practice NEET tests.
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