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Bihar Board Class 12 (Science) Biotechnology and Applications — practice questions — page 3

Explore 129 free Biotechnology and Applications questions in Bihar Board Class 12 (Science) 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 61–90 of 129.

Rosie, the first transgenic cow, gave milk enriched in human:Read the answer and worked solution →Transgenic mice are being used to test the safety of the:Read the answer and worked solution →Which body clears the safety of GM organisms in India?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 →Colonies whose beta galactosidase gene carries an insert appear:Read the answer and worked solution →Bacterial cells are made competent by treating them with a divalent:Read the answer and worked solution →Bombarding plant cells with DNA coated gold particles is called:Read the answer and worked solution →Micro-injection puts recombinant DNA directly into the:Read the answer and worked solution →The first MAJOR recombinant DNA pharmaceutical, released commercially in 1982, was:Read the answer and worked solution →In gel electrophoresis DNA fragments move towards the:Read the answer and worked solution →Which matrix is most commonly used to separate DNA fragments?Read the answer and worked solution →In an agarose gel the fragment that travels farthest is the:Read the answer and worked solution →PCR amplifies a chosen segment using two sets of:Read the answer and worked solution →Repeated cycles of PCR can amplify a segment about:Read the answer and worked solution →The standard PLANT cell transformation method uses:Read the answer and worked solution →The vector sequence from which replication begins is the:Read the answer and worked solution →An antibiotic resistance gene on a vector serves mainly as a:Read the answer and worked solution →A foreign gene ligated at the BamH I site of pBR322 destroys:Read the answer and worked solution →The thermostable polymerase used in PCR is taken from:Read the answer and worked solution →Virus free plants can be raised from an infected plant using its:Read the answer and worked solution →The Bt toxin used in pest resistant crops comes from a:Read the answer and worked solution →Silencing a gene with a complementary double stranded RNA is:Read 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 →

Worked practice questions

Rosie, the first transgenic cow, gave milk enriched in human:

  1. Alpha antitrypsin
  2. Alpha ketoglutarate
  3. Alpha aminobutyrate
  4. Alpha lactalbumin
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Correct answer: D. Alpha lactalbumin

1. Rosie was produced in 1997. 2. Her milk carried a human protein at 2.4 grams a litre. 3. That protein was alpha lactalbumin. _Source: syllabus Biology, Ch 10 'Biotechnology and its Applications'_

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Transgenic mice are being used to test the safety of the:

  1. Polio vaccine
  2. Rabies vaccine
  3. Plague vaccine
  4. Mumps vaccine
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Correct answer: A. Polio vaccine

1. A vaccine batch must be checked before human use. 2. Transgenic mice can replace monkeys for that check. 3. They are being used to test the polio vaccine. _Source: syllabus Biology, Ch 10 'Biotechnology and its Applications'_

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Which body clears the safety of GM organisms in India?

  1. DRDO
  2. GEAC
  3. ICMR
  4. CSIR
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Correct answer: B. GEAC

1. Releasing a modified organism needs regulation. 2. India set up a committee to judge such research. 3. That committee is the GEAC. _Source: syllabus Biology, Ch 10 'Biotechnology and its Applications'_

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