Biotechnology: Principles and Processes

Bihar Board Class 12 · Biology · 74 past questions

1. Q1 2026 Set A

   Which of the following is the blood cholesterol lowering agent?

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2. Q2 2026 Set A

   In which of the following is the large volume of culture processed to produce appreciable quantities of…

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3. Q3 2026 Set A

   What is essential for occurrence of the same kind of sticky ends' of DNA fragments?

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4. Q4 2026 Set A

   During gel electrophoresis, fragments of DNA move towards which electrode ?

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5. Q5 2026 Set A

   Which of the following is the sequence from where replication starts in cloning vector ?

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6. Q6 2026 Set A

   DNA cannot pass through cell membrane because DNA .......... is molecule.

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7. Q7 2026 Set A

   Themrostable DNA polymerase used in PCR is isolated from which bacteria?

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8. Q8 2025

   Which of the following is based on the principle of antigen-antibody interaction?

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9. Q9 2025

   When very few bacteria or viruses are present in an infected person, which technique can be used to identify…

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10. Q10 2025

    Which enzyme links the gene to the vector?

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11. Q11 2025

    Which of the following is the first restriction endonuclease?

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12. Q12 2025

    In get electrophoresis, DNA fragment move towards which of the following electrodes?

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13. Q13 2025

    Which of the following features is not required in a cloning vector?

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14. Q14 2025

    Which enzyme is used to process a bacterial cell to obtain its DNA?

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15. Q15 2025

    Which statement is incorrect about restriction endonuclease?

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16. Q16 2024 Set E

    Reason for movement of DNA fragments towards anode in electrophoresis is DNA fragments being

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17. Q17 2024 Set E

    What is the use of alpha-1-antitrypsin?

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18. Q18 2024 Set E

    Which of the following methods is used for the amplification of nucleic acid?

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19. Q19 2024 Set E

    Which of the following organizations makes decision regarding the validity of GM research and the safety of…

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20. Q20 2024 Set E

    Which of the following is not a cloning vector for bacteria?

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21. Q21 2024 Set E

    For isolation of DNA a fungus is treated with which enzyme?

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22. Q22 2024 Set E

    Which of the following is absent in pBR322?

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23. Q23 2024 Set E

    From which of the following bacteria, thermostable DNA polymerase is isolated?

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24. Q24 2024 Set E

    Which of the following bacteria synthesizes insecticidal protein?

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25. Q25 2023

    Ti-plasmid is obtained from which of the following ?

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26. Q26 2023

    ‘Cry-gene’ prevents which crop from bollworm ?

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27. Q27 2023

    Which transgenic plant is rich in β–carotene and ferritin in the following ?

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28. Q28 2023

    Which of the following enhances or induces fusion of protoplast ?

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29. Q29 2023

    Advancement in genetic engineering has been possible due to whom?

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30. Q30 2023

    In genetic engineering, restriction enzymes can be used for –

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31. Q31 2022 Set A

    The enzyme required for polymerase chain reaction is

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32. Q32 2022 Set A

    By which enzyme is nucleic acid cleaved?

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33. Q33 2022 Set A

    What is the process of primers binding to ss DNA during PCR technique called?

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34. Q34 2022 Set A

    Which of the following is NOT a tool of RDT?

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35. Q35 2022 Set A

    Taq polymerase enzyme is obtained

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36. Q36 2022 Set A

    DNA recombinant technology uses

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37. Q37 2022 Set A

    Genetically engineered bacteria are used for the production of which of the following?

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38. Q38 2022 Set A

    Which vector can clone small fragments of DNA?

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39. Q39 2022 Set A

    Which of the following restriction enzymes produces blunt ends?

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40. Q40 2022 Set A

    α-1 antitrypsin is

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41. Q41 2022 Set A

    Hybridoma is useful for what?

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42. Q42 2021 Set H

    PCR is used to detect

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43. Q43 2021 Set H

    Restriction enzymes are

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44. Q44 2021 Set H

    Bio-reactors in optimal conditions produce

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45. Q45 2021 Set H

    Agarose is extracted from

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46. Q46 2020

    Which of the following is a plasmid?

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47. Q47 2020

    GAATTC is the recognition site of which of the following?

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48. Q48 2020

    What are recombinant DNA vaccines?

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49. Q49 2020

    What is the function of the polymerase chain reaction?

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50. Q50 2019

    RNAi is used to control pests on which plant?

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51. Q51 2019

    Cry IAb controls

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52. Q52 2019

    Transgenic mice may be used for testing of

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53. Q53 2019

    For induction of alien DNA in host cell we may use

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54. Q54 2019

    amp$^R$ gene is responsible for developing resistance in

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55. Q55 2019

    Amplification of gene for interest may be done by

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56. Q56 2019

    Bio reactors provide optimal conditions to produce desired.

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57. Q57 2018

    'Flaver Saver' is a-

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58. Q58 2018

    The specific sequence of DNA recognized by Restriction Endonuclease are…

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59. Q59 2018

    The first clinical gene therapy was given for…

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60. Q60 2018

    GAATTC is recognition site for which restriction endonuclease?

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61. Q61 2018

    The first transgenic cow was named as…

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62. Q62 2018

    Which of the following Nemotodes infect the root of tobacco plants?

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63. Q63 2018

    A molecular technique in which multiple copy of the desired gene is synthesized is vitro is called as…

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64. Q64 2018

    Which of the following enzyme is used to break the bacterial cell wall to release DNA and other bio micro…

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65. Q65 2018

    The toxic protein secreted by Bacillus thuringiensis is…

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66. Q66 2018

    What do you mean by genetically modified organism? Describe two (2) benefits of these crops.

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67. Q67 2018

    What is restriction endonuclease? What is its significance in genetic engineering?

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68. Q68 2017

    What is DNA probe? Give its application in Biotechnology.

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69. Q69 2016

    Which crop is protected from the bollworm by the Bt gene?

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70. Q70 2015

    Source of Eco RI enzyme is

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71. Q71 2015

    Ti-plasmid is found in

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72. Q72 2015

    Agarose is extracted from

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73. Q73 2015

    Which vitamin is present in Golden rice?

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74. Q74 2015

    Define plasmid. Describe the structure and utility of the plasmids.

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