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ISC Class 12 Biotechnology and Applications — practice questions — page 2

Explore 84 free Biotechnology and Applications questions in ISC Class 12 Biology. Open each question or exercise to read its content, reference answers and available explanation.

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Biotechnology and Applications questions and exercises with answers

Showing questions 31–60 of 84.

Pick the right answer, quicklyRead the answer and worked solution →Raising thousands of plants through tissue culture is called:Read the answer and worked solution →Plants raised from one parent by tissue culture are called:Read the answer and worked solution →Plant cells stripped of their walls by digestion are called:Read the answer and worked solution →Fusing protoplasts of two varieties gives a plant known as a:Read the answer and worked solution →Rice enriched with vitamin A by genetic modification is:Read the answer and worked solution →Inside Bacillus thuringiensis the Bt toxin is stored as:Read the answer and worked solution →The Bt protoxin becomes an active toxin because the insect gut is:Read the answer and worked solution →Once activated the Bt toxin kills by acting on the insect:Read the answer and worked solution →Tobacco roots are protected from a nematode by silencing its:Read the answer and worked solution →ELISA works on the principle of interaction between:Read the answer and worked solution →In molecular diagnosis the labelled single strand used is called a:Read the answer and worked solution →Using a country's bio-resources without authorisation is:Read the answer and worked solution →How many documented varieties of Basmati are grown in India?Read the answer and worked solution →Order the steps of Bt toxin actionRead the answer and worked solution →The ADA gene is carried into a patient's lymphocytes by a:Read the answer and worked solution →Very low numbers of a pathogen can be detected early by:Read the answer and worked solution →True or false about restriction enzymesRead the answer and worked solution →Which engineering does each job belong to?Read the answer and worked solution →Recombinant DNA uptake is helped by a brief heat shock at:Read the answer and worked solution →The first restriction endonuclease to be isolated was:Read the answer and worked solution →Restriction enzymes are best described as:Read the answer and worked solution →Cutting a stained DNA band out of the gel and recovering it is:Read the answer and worked solution →Human insulin is built from two polypeptide chains joined by:Read the answer and worked solution →The extra stretch removed as pro-insulin matures is the:Read the answer and worked solution →Human insulin was first produced by recombinant means in:Read the answer and worked solution →Inserting a normal gene to correct an inherited defect is:Read the answer and worked solution →The first clinical gene therapy treated a deficiency of:Read the answer and worked solution →Nucleases that remove nucleotides from DNA ends are:Read the answer and worked solution →Spot the one that does not fitRead the answer and worked solution →

Worked practice questions

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Questions
  1. Question
    Rosie the transgenic cow appeared in:
    Choices
    1. 1983
    2. 1990
    3. 1997
    Correct choice
    1997
  2. Question
    Share of transgenic animals that are mice:
    Choices
    1. Over 95 per cent
    2. About 45 per cent
    3. About 15 per cent
    Correct choice
    Over 95 per cent
  3. Question
    Documented Basmati varieties grown in India:
    Choices
    1. 7
    2. 27
    3. 77
    Correct choice
    27
  4. Question
    Recombinant therapeutics cleared for human use:
    Choices
    1. About 3
    2. About 30
    3. About 300
    Correct choice
    About 30
  5. Question
    Transgenic mice are used to test:
    Choices
    1. Polio vaccine
    2. Rabies vaccine
    3. Plague vaccine
    Correct choice
    Polio vaccine
Instructions
Tap the correct answer before the round moves on.
_Source: syllabus Biology, Ch 10 'Biotechnology and its Applications'_

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Raising thousands of plants through tissue culture is called:

  1. Micro-pollination
  2. Micro-propagation
  3. Micro-respiration
  4. Micro-fertilisation
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Correct answer: B. Micro-propagation

1. Tissue culture works from very small explants. 2. Huge numbers of plants come up in a short time. 3. This method is called micro-propagation. _Source: syllabus Biology, Ch 10 'Biotechnology and its Applications'_

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Plants raised from one parent by tissue culture are called:

  1. Somaclones
  2. Protoplasts
  3. Transgenics
  4. Hybridomas
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Correct answer: A. Somaclones

1. Every plant comes from cells of the same parent. 2. They are therefore genetically identical to it. 3. Such identical plants are called somaclones. _Source: syllabus Biology, Ch 10 'Biotechnology and its Applications'_

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More Biology topics

Genetics and EvolutionReproduction in Organisms & PlantsBiology in Human Welfare & HealthEcology and Environment