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12th Biology chapter 11 Bihar board with NCERT-Details & Highlights
| name of content | 12th Biology chapter 11 full solution |
| content | Biology objective type MCQ question with answer |
| name of subjects | class 12 Biology |
| important for exam | Bihar board & other state board |
| pattern & Level | NCERT & State level question |
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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| 01 | Physics |
| 02 | Chemistry |
| 03 | Biology |
| 04 | Math |
| 05 | Hindi |
| 06 | English |