12th Biology chapter 11: full solution, notes, MCQ, & free PDF | Bihar board

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12th Biology chapter 11: cover all important question with new latest pattern. you can download Biology chapter 11 notes & full solution as PDF format in English. below we are goin to cover chapter 11 Biology class 12 Bihar board
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12th Biology chapter 11 Bihar board with NCERT-Details & Highlights

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12th Biology chapter 11 all objective solutions – download PDF

1. PCR Method Required
    • (A) DNA synthesis
    • (B) in protein synthesis
    • (C) in amino acid synthesis
    • (D) DNA culture
 Answer: (D) DNA culture
2. P 0 C 0 R 0 checks
    • (A) HIV
    • (B) cancer
    • (C) Tuberculosis
    • (D) cholera
Answer: (A) HIV
3. Where is Ti-plasmid found?
    • (A) Agrobacterium tumifaciens
    • (B) E. coli in
    • (C) B. coli in
    • (D) all of these
 Answer: (A) In Agrobacterium tumifaciens
4. Agarose is obtained from?
    • (A) Seaweed
    • (B) Maize
    • (C) Cycas
    • (D) none of these
 Ans: (A) Seaweed
 5. Eco RI is a source of enzymes
    • (A) Bam HI
    • ( B ) E.Coli
    • (C) Both ‘ A ‘ and ‘ B ‘
    • (D) Hind II
 Answer: (B) E.Coli
 6. Bacteria is found in
    • (A) Plasmid DNA
    • (B) RNA
    • (C) Both ‘ A ‘ and ‘ B ‘
    • (D) none of these
 Answer: (A) Plasmid DNA
7. DNA is the genetic material of which of the following?
    • (A) TMV
    • (B) Bacteriophage
    • (C) Both ‘ A ‘ and ‘ B ‘
    • (D) none
 Answer: (B) Bacteriophage
 8. What is ‘Flavor Saver’?
    • (A) pesticide
    • (B) species of chicks
    • (C) Parasitic tomatoes
    • (D) insecticidal protein
 Ans: (C) Parasitic tomatoes
 9. The emergence of antibiotic resistant bacteria is an example of
    • (A) adaptive radiation
    • (B) Transduction
    • (C) Pre-existing variation in a community
    • (D) divergent evolution
 Answer: (A) Adaptive Radiation
10. d n 0 a 0 element that has the ability to change position
    • (A) Systrom
    • (B) transposon
    • (C) Intran
    • (D) all of the above
 Answer: (B) Transposon

Bihar Board most mcq solution 12th biology chapter 11

11. given lac operator regulation
    • (A) Watson and Crick
    • (B) Beadle and Tatum
    • (C) Miller and Urey
    • (D) Jacob and Monod
 Answer: (D) Jacob and Monod
12. The main use of restriction endonuclease is
    • (A) in the gene library
    • (B) In making physical restriction maps
    • (C) in gene cloning
    • (D) all of the above
Answer: (D) All of the above
13. Primers are used
    • (A) in PCR
    • (B) in cloning
    • (C) in DNA processing
    • (D) none of these
Answer: (A) In PCR
14. Generates tumors in the roots of plants
    • (A) E. coli
    • (B) Agrobacterium tumicaceae
    • (C) Thermos aquaticus
    • (D) none of these
 Answer: (B) Agrobacterium tumicaceae
15. Combination of virus genome with host DNA is called
    • (A) Phase
    • (B) protophase
    • (C) Bacteriophage
    • (D) none of these
 Answer: (C) Bacteriophage
16. Linkage of antibiotic resistance gene with plasmid vector is possible with
    • (A) DNA polymerase
    • (B) exonuclease
    • (C) DNA ligase
    • (D) Inonuclease
 Answer: (C) DNA ligase
 17. Which one of the following enzymes is active even at high temperature?
    • (A) Cellulase
    • (B) Tac Polymerase
    • (C) Lysozyme
    • (D) pectenase
Answer: (B) Tech Polymerase
18. Which of the following is used to join the cut parts of dn n a 0?
    • (A) Transcriptase
    • (B) ligase
    • (C) Ribonuclease
    • (D) none of these
Answer: (B) Luggage
19. DNA segment is added
    • (A) by endonuclease enzyme
    • (B) by ligase enzyme
    • (C) Helicase
    • (D) Inhibition by enzymes
 Answer: (B) by ligase enzyme
20. By which technology modified antibiotics are produced?
    • (A) Fine performance
    • (B) rapid centrifugation
    • (C) Genetic engineering
    • (D) micro reflection
 Answer: (C) Genetic engineering
 21. The name of the center of Biotechnology located in Delhi is
    • (A) Pt. Jawaharlal Nehru Technology Center
    • (B) Indira Gandhi Biotechnology Center
    • (C) Lal Bahadur Biotechnology Center
    • (D) none of these
 Ans: (C) Lal Bahadur Biotechnology Center

Important most mcq solution 12th biology chapter 11

 22. Who discovered the jumping gene in maize?
    • (A) HugoDbies
    • (B) Barbara Manklintock
    • (C) T. H. by morgan
    • (D) Mendel
 Answer: (B) By Barbara Mankilintok
 23. Two micro-organisms which are very important in genetic engineering
    • (A) Escherichia coli and Agrobacterium tumifaciens
    • (B) Vinio cholerae and cauliflower bacteriophage
    • (C) Diplococcus species and Pseudomonas species
    • (D) Crown gall bacteria and Sonorandotis glugens
 Ans: (A) Escherichia coli and Agrobacterium tumifaciens
 24. In order to introduce foreign DNA into host cells, it is used
    • (A) micro injection
    • (B) Jeev Gun
    • (C) Harmful pathogens
    • (D) all of them
 Answer: (D) All of them
25. Genetically identical gene developed through tissue culture is called
    • (A) Grafting
    • (B) Cloning
    • (C) Plasmid
    • (D) Hybrid
 Answer: (B) Cloning
26. Which of the following is called genetic material?
    • (A) DNA
    • (B) protein
    • (C) fat
    • (D) all of the above
Answer: (A) DNA
27. Exonuclease removes DNA
    • (A) from the end
    • (B) internally from specific sites
    • (C) from additional specific sites
    • (D) none of these
Answer: (A) from the end
28. Bam HI reversal enzyme is obtained from
    • (A) Haemophilis influenzae
    • (B) E.Coli
    • (C) Bacillus amaloliquefaciens
    • (D) none of these
 Answer: (C) Bacillus amaloliquefaciens
29. Restriction Enzyme Discovered
    • (A) Smith and Nathans
    • (B) Burger
    • (C) Waxman
    • (D) Fleming
 Answer: (A) Smith and Nathans
30. D0N0A0 Finger Printing for D0N0A0 is obtained
    • (A) white blood cells
    • (B) hair root cells
    • (C) body secretion
    • (D) all of the above
 Answer: (A) White blood cells
31. Plasmid is a
    • (A) Fungus
    • (B) Part of plasma membrane
    • (C) Bacteria
    • (D) extra chromosomal DNA found in bacterial cell
Answer: (D) Extra chromosomal DNA found in bacterial cell
32. Whose contribution is there in fulfilling the objectives of biotechnology?
    • (A) Genetic engineering
    • (B) Microbiology
    • (C) Molecular biology
    • (D) all of the above
Answer: (C) Molecular Biology

12th biology chapter 11 mcq solution bihar board 

33. What is called genetic mechanics?
    • (A) Recombinant DNA technology
    • (B) tissue culture
    • (C) Cloning conductor
    • (D) downstream resources
Answer: (A) Recombinant DNA technology
34. Restriction endonuclease
    • (A) breaks the DNA at a specific site
    • (B) creates adhesive edge
    • (C) makes crossover
    • (D) Both ‘ A ‘ and ‘ B ‘
Answer: (B) Adhesive makes the edge
35. The enzymes commonly used in genetic engineering are
    • (A) Restriction endonuclease and polymerase
    • (B) Endonuclease and ligament
    • (C) Restriction endonuclease and ligament
    • (D) ligase and polymerase
 Ans: (C) Restriction endonuclease and ligament
36. The fragmentation of plasmid vectors by recombinant DNA technique is required by whom?
    • (A) By hot alkaline solution
    • (B) transformed by DNA ligase
    • (C) by four isolated enzymes
    • (D) the same enzyme by which the donor gene is truncated
 Answer: (D) The same enzyme by which the donor gene is cleaved
37. Which of the following is used as a driver for gene cloning in higher organisms?
    • (A) Baculo virus
    • (B) Salmonella Typhimurium
    • (C) Rhizopus nigricans
    • (D) retrovirus
Answer: (D) Retrovirus
38. Cry I endotoxin obtained from Vacillus thuringiensis is effective against?
    • (A) Nematode
    • (B) round worm
    • (C) Mosquito
    • (D) flies
 Answer: (B) Roundworm
 39. Molecular chains that cut DNA at a specific site
    • (A) Pectinase
    • (B) polymerase
    • (C) Restriction endonuclease
    • (D) ligase
 Answer: (C) Restriction endonuclease
 40. Most commonly used bacteria in genetic engineering are
    • (A) Escherichia coli
    • (B) Clostridium resticum
    • (C) Salmonella typhi
    • (D) none of these
 Ans: (A) Escherichia coli
41. Which of the following microorganisms is very useful in genetic engineering?
    • (A) Escherichia coli and Agrobacterium tumifacians
    • (B) Bibrino cholerae and caudal bacteriophage
    • (C) Diplococcus sp. 0 and Pseudomonas sp.
    • (D) none of these
 Ans: (A) Escherichia coli and Agrobacterium tumifacians
42. Agarose gel is obtained from
    • (A) sea grass
    • (B) from Mecca
    • (C) Hydilla
    • (D) Fern
 Answer: (C) Hydila
43. Agarose extracted from sea weed is used for
    • (A) tissue culture
    • (B) in PCR
    • (C) in gel electrophoresis
    • (D) Spectrophotometro
 Answer: (A) tissue culture

BSEB 12th biology chapter 11 most objective solution

44. Those parts of DNA which do not participate in coding for protein synthesis are called
    • (A) Intronous
    • (B) extras
    • (C) transposons
    • (D) none of these
Answer: (A) Introns
 45. EcoRI is a restriction endonuclease, in which co stands for
    • (A) Silom
    • (B) of – enzyme
    •  (C) E. coli
    • (D) Cologne
 Answer: (C) E. coli
46. ​​Recombination nodules are found in which of the following?
    • (A) Undo
    • (B) posterior stage
    • (C) End
    • (D) Intermediate
Answer: (A) Undo
47. Which one of the following factors is not used as a vector for DNA cloning?
    • (A) Plamid
    • (B) Cosmid
    • (C) Virus
    • (D) House Palai
 Answer: (D) House Palai
48. Human Genome Project was discovered by
    • (A) Francis Collins and Roderick
    • (B) Watson and Crick
    • (C) Weidle and Tatum
    • (D) Pal class and Walmond
 Answer: (A) Francis Collins and Roderick
49. What are transgene plants made from?
    • (A) Clones and genetically modified
    • (B) entry of foreign genes
    • (C) gene engineering
    • (D) modified genes
 Answer: (B) by the introduction of foreign genes
50. What is used to see dna 0 in the laboratory
    • (A) Thiamine
    • (B) Aniline Blue
    • (C) Ethidium bromide
    • (D) all of the above
Answer: (C) Ethidium bromide
51. TI plasmid is found in
    • (A) in Agrobacterium tumifensis
    • (B) Escherichia coli
    • (C) in bacteriophage
    • (D) none of these
 Answer: (A) ) In Agrobacterium tumifensis
 52. Parasitic plants are developed by
    • (A) by the introduction of a foreign gene
    • (B) By cloned and genetically modified genes
    • (C) By genetic engineer
    • (D) By pure genes
 Answer: (A) by the introduction of a foreign gene
 53. P 0 C 0 R 0 is used
    • (A) For the management of which particular place of DNA
    • (B) for amplification in enzymes
    • (C) for the amplification of proteins
    • (D) all of the above
Answer: (A) For the management of which particular place of DNA
54. Enzymes obtained by fungi
    • (A) ligase
    • (B) Lysozyme
    • (C) phytinase
    • (D) Galactose
Answer: (C) Phytinase
55. Which of the following is most commonly used for genetic engineering in plants?
    • (A) Agrobacterium tumifaciens
    • (B) Xanthomonas citri
    • (C) Bacillus comulens
    • (D) Clostridium septicum
 Answer: (A) Agrobacterium tumifachians
 56. Which of the following is a cloning plasmid and not an expression plasmid?
    • (A) PBAD – 18 – cam
    • ( B ) PB CSK
    • (C) pUC – 18
    • ( D ) PET
Answer: (C) pUC – 18
57. Restriction Endonuclease Cuts
    • (A) A DNA cord at a specific site
    • (B) all three strands of DNA
    • (C) both the strands of DNA at any site
    • (D) RNA of single cord
Answer: (B) all the three strands of DNA
58. Recombinant technology was discovered
    • (A) Dr. by Hargobind Khurana
    • (B) James D. By Watson
    • (C) S. Cotten and H. by boyer
    • (D) by Sutton and Bobhari
Answer: (A) Dr. by Hargobind Khurana
59. Tank DNA polymerase enzyme is obtained from
    • (A) Thermos aquaticus
    • (B) E.Coli
    • (C) Agrobacterium tumefensiens
    • (D) none of these
Answer: (A) Thermos aquaticus

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