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Crystals of Bt toxin produced by some bacteria do not kill the
Biology
Biology

Class 12

NCERT

Publisher:
NCERT
Subject:
Biology
1

Chapter 1: Reproduction in Organisms

18 questions

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2

Chapter 2: Sexual Reproduction in Flowering Plants

18 questions

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3

Chapter 3: Human Reproduction

21 questions

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4

Chapter 4: Reproductive Health

12 questions

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5

Chapter 5: Principles of Inheritance and Variation

16 questions

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6

Chapter 6: Molecular Basis of Inheritance

14 questions

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7

Chapter 7: Evolution

10 questions

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8

Chapter 8: Human Health and Disease

17 questions

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9

Chapter 9: Strategies for Enhancement in Food Production

12 questions

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10

Chapter 10: Microbes in Human Welfare

15 questions

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11

Chapter 11: Biotechnology: Principles and Processes

12 questions

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12

Chapter 12: Biotechnology and its Applications

10 questions

Q1
Crystals of Bt toxin produced by some bacteria do not kill the bacteria themselves because:
Q2
What are transgenic bacteria? Illustrate using any one example.
View all question
13

Chapter 13: Organisms and Populations

17 questions

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14

Chapter 14: Ecosystem

13 questions

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15

Chapter 15: Biodiversity and Conservation

10 questions

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16

Chapter 16: Environmental Issues

11 questions

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Question
Easy
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Solving time: 1 mins

Crystals of Bt toxin produced by some bacteria do not kill the bacteria themselves because:

A
Bacteria are resistant to the toxin

B
Toxin is immature

C
Toxin is inactive

D
Bacteria encloses toxin in a special sac

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Views: 5,808 students

Updated on: Mar 25, 2023

Book

Book:

Biology (NCERT)

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Text SolutionText solutionverified iconVerified

Bt toxin from Bacillus thuringiensis (Bt) is secreted in an inactive form and is activated in alkaline conditions of the gut of gallworms. The activated toxin bind to receptors on midgut epithelial cells of gallworm become inserted into the plasma membrane where they form pores leading to cell death through osmotic lysis. It does not affect the bacteria itself as it is being secreted in an inactive form. Thus, the correct answer is option C.
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Question Text
Crystals of Bt toxin produced by some bacteria do not kill the bacteria themselves because:
Updated OnMar 25, 2023
TopicBiotechnology and its Applications
SubjectBiology
ClassClass 12
Answer TypeText solution:1 Video solution: 1
Upvotes172
Avg. Video Duration2 min