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12th Class Biology Chapter 23 MCQs with Answers
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MCQs Class 12 Biology with Answers
The purpose of these online MCQs tests is to help you evaluate your 12th Class Biology Chapter 23 MCQs. These Multiple Choice Questions (MCQs) will prepare you for your academic success in the 12th Class Exams. 12th Class Biology Chapters include Ch#15 Homeostasis, Ch#16 Support and Movement, Ch#17 Coordination and Control, Ch#18 Reproduction, Ch#19 Growth and Development, Ch#20 Chromosome and DNA, Ch#21 Cell Cycle, Ch#22 Variation and Genetics, Ch#23 Biotechnology, Ch#24 Evolution, Ch#25 Ecosystem, Ch#26 Some major Ecosystems and Ch#27 Man and his Environment.
What is Biotechnology?
Biotechnology is a broad discipline in which biological processes, organisms, cells or cellular components are exploited to develop new technologies. New tools and products developed by biotechnologists are useful in research, agriculture, industry, and the clinic.
12th Class Biology Chapter 23 MCQs: Biotechnology
1. Mendel’s work was rediscovered in choose which one is correct:
- 1868
- 1882
- 1900
- 1950
2. The work of biotechnology is choose which one is correct:
- Insulin
- Drugs
- Pollution
- All of the above
3. Production of identical copying of gene is choose which one is correct:
- Replication
- Cloning
- Reproduction
- Multiplication
4. Which of the following techniques produces large number of copies of genes?
- PCR
- Recombinant DNA technology
- RFLP
- None of the above
5. The technique used to produce copies of genes in laboratory is choose which one is correct:
- PCR
- Recombinant DNA technology
- RFLOP
- None of the above
6. Which of the followings is used to transfer genes?
- Molecular scissors
- Molecular vector
- Expression system
- None of the above
7. The system used for the formation of specific product is choose which one is correct:
- Molecular scissors
- Molecular vector
- Expression system
- Gene of interest
8. Genes are cut by choose which one is correct:
- Gene of interest
- Expression system
- Molecular vector
- Endonucleases
9. The genes which are synthesized from mRNA by reverse transcriptase are
called choose which one is correct:
- Endonucleases
- Plasmids
- Coda
- None of the above
10. Restriction enzymes are present in choose which one is correct:
- Virus
- Bacteria
- Plasmids
- All of the above
11. The first restriction enzyme was isolated by choose which one is correct:
- Kary Mullis
- Hamiton
- Sanger
- Maxam
12. Palindromic sequences are present in choose which one is correct:
- Single phase
- Repeated form
- Reverse order
- Similar order
13. Number of restriction enzymes discovered so far are choose which one is correct:
- 200
- 300
- 400
- 500
14. The number of frequently used restriction enzymes are choose which one is correct:
- 10
- 20
- 30
- 40
15. The commonly used restriction enzyme is choose which one is correct:
- E.Coli
- EcoR11
- EcoR1
- EcoR111
16. Natural extra chromosomal circular DNA are choose which one is correct:
- Endonucleases
- Restriction enzyme
- Plasmids
- Phage virus
17. Which of the followings is not a vector?
- pSc 101
- pBR-322
- EcoR1
- Phage virus
18. The plasmids having resistant gene against tetracycline and ampicillin are choose which one is correct:
- pSc 101
- pBR-322
- EcoR1
- Phage virus
19. Which of the following phages is use as vector?
- Bacteriophage
- Lambda phage
- T phage
- All of the above
20. Pieces of DNA are jointed by choose which one is correct:
- Chimaeric DNA
- DA ligase
- Plasmids
- Endonucleases
21. Match recombinant DNA with one of the followings choose which one is correct:
- Chimaeric DNA
- DNA ligase
- Plasmids
- Endonucleases
22. Recombinant DNA are expressed in choose which one is correct:
- Man
- Virus
- Bacteria
- None of the above
23. The chemical that makes the bacterial membrane permeable is choose which one is correct:
- NaCl
- CaCl2
- Na2CO3
- CaCO3
24. The single standard nucleotide sequence that hybridize into certain piece is choose which one is correct:
- Clone
- Probe
- REFLP
- Endonuclease
25. Which of the followings form genomic library?
- Bacteria
- Bacteriophage
- Segment of DNA
- None of the above
26. PCR technique was developed by choose which one is correct:
- Kary Mullis
- Hamilton
- Sanger
- Maxam
27. Which of the followings is irrelevant for PCR?
- Primer DNA
- Recombinant DNA
- DNA polymerase
- Thermocycler
28. Match target DNA with one of the followings choose which one is correct:
- Primer DNA
- Recombinant DNA
- DNA polymerase
- Thermocycler
29. The enzyme extracted from Thermus aquaticus is choose which one is correct:
- Primer DNA
- Recombinant DNA
- DNA polymerase
- Thermocycler
30. The steps involved in DNA finger printing choose which one is correct:
- RFLP
- Probes
- PCR
- All of the above
31. The collection of different sized fragments is choose which one is correct:
- Probes
- RFLP
- PCR
- Gel
32. DNA analyzer is used for choose which one is correct:
- Forensic
- Diagnosis
- Evolution
- All of the above
33. The use of DNA analysis for convicting the criminal of rape is used in choose which one is correct:
- Diagnosis
- Forensic
- Evolution
- All of the above
34. Match Sanger’s method for generation of pieces of DNA with one of the
followings choose which one is correct:
- Deoxyribonucleotide
- Ribonucleoside
- Dideoxyribonucleoside
- DNA threads
35. Match Maxam Gilbert method for generation of pieces of DNA with one of
the followings choose which one is correct:
- Deoxyribonucleotide
- Dexoyribonucleoside
- Dideoxyribonucleoside
- DMA threads
36. Pieces of DNA are separated on choose which one is correct:
- Agarol
- Agarose gel
- Agar
- All of the above
37. In gene sequencing the nucleotide strained with fluorescent dye are choose which one is correct:
- Initiation nucleotides
- Middle nucleotides
- Terminating nucleotides
- None of the above
38. In gene sequencing, the colour of the fluorescent bands are read by choose which one is correct:
- Computer
- Gel
- Detector
- Laser beam
39. The nucleotide sequence is stored by choose which one is correct:
- Computer
- Gel
- Detector
- Laser beam
40. The DNA sequence of which of the followings have been done?
- Chloroplast
- Mitochondria
- Yeast
- All of the above
41. Which of the followings is model plant whose gene sequencing has been completed?
- Yeast
- Pea
- Arabidopsis
- Plum
42. The gene sequence of which of the following chromosomes was completed in
1999 choose which one is correct:
- 12
- 18
- 21
- 22
43. The smallest human chromosomes is choose which one is correct:
- 10
- 22
- 23
- Y
44. Which of the followings helped scientist to pinpoint disease causing genes?
- PCR
- Recombinant DNA
- RFLP
- Probe
45. The number of base sequences in man is choose which one is correct:
- 2 billion
- 3 billion
- 4 billion
- 5 billion
46. The human genomic project will take how many volume of encyclopedia choose which one is correct:
- 100
- 200
- 300
- 400
47. Each piece of DNA should be choose which one is correct:
- 500 nucleotide
- 1000 nucleotide
- 3000 nucleotide
- 4000 nucleotide
48. The copy of DNA pieces in human genomic project is made by choose which one is correct:
- PCR
- Recombinant DNA
- RFLP
- Probe
49. The entire genome has been sequence by the company of choose which one is correct:
- J. Craig Venter
- Hamilton
- Sanger
- Maxam
50. Organisms with foreign genes are called choose which one is correct:
- Recombinant
- Hybrids
- Transgenic
- Modified
51. Transgenic bacteria are produced in large vats called choose which one is correct:
- Thermocycler
- Bioreactors
- Reactors
- Electrophoresis
52. Which of the following products is prepared by recombinant DNA technology?
- Hepatitis B vaccine
- Growth hormone
- Insulin
- All of the above
53. The degradation of pollutants with the help of recombinant bacteria is called choose which one is correct:
- Biofilters
- Biodegradation
- Bioabsorption
- None of the above
54. The bacteria used in industries for control of pollution are choose which one is correct:
- Bioabsorption
- Biodegradation
- Biofilters
- None of the above
55. The genes which cause self destruction of bacteria are choose which one is correct:
- Phage genes
- Suicide genes
- Recombinant genes
- Plasmid genes
56. Naturasweet is choose which one is correct:
- Sugar
- Starch
- Aspartame
- Glucose
57. The bacteria are used in mining industry for choose which one is correct:
- Bioabsorption
- Biodegradation
- Biofilters
- Bioleaching
58. The plant cells whose cell wall is removed are choose which one is correct:
- Naked cells
- Cullous
- Protoplast
- All of the above
59. In which of the followings plant pest and herb resistant genes are not used?
- Cotton
- Corm
- Yeast
- Potato
60. The acreage of transgenic plants in 1999 was choose which one is correct:
- 50 million
- 70 million
- 90 million
- 100 million
61. Green revolution was launched in choose which one is correct:
- 1960
- 1970
- 1990
- 2000
62. Scientists are working on which of followings for increasing yield choose which one is correct:
- Stomata
- RuBP carboxylase
- C4 cycle
- All of the above
63. Biodegradable plastic is obtained from choose which one is correct:
- Yeast
- Mouse eared cress
- Bacteria
- Bioreactos
64. The antibody which can deliver radio isotopes to tumor cells is obtained
from choose which one is correct:
- Yeast
- Weed
- Corn
- Wheat
65. The antibody which is used for the treatment of genital herps is obtained
from choose which one is correct:
- Yeast
- Soya bean
- Corn
- Wheat
66. Gene pharming is used for obtaining choose which one is correct:
- Milk
- Meat
- Antibodies
- Drugs
67. In gene pharming egg is fertilized choose which one is correct:
- In vitro
- In vivo
- In bioreactor
- None of the above
68. Antithrombin is produced in choose which one is correct:
- Sheep
- Goat
- Mice
- Bovine
69. The organisms which are used to produce human growth hormone in their
urine are choose which one is correct:
- Sheep
- Goat
- Mice
- Bovine
70. The production of genetically identical copies of the organisms by asexual
reproduction is called choose which one is correct:
- Recombinant DNA
- Cloning
- Gene pharming
- None of the above
71. The first animal cloned was choose which one is correct:
- Sheep
- Dolly
- Mice
- Bovine
72. In the cloning of mice the second nucleus is obtained from choose which one is correct:
- Uterus cells
- Cumulus cells
- Skin cells
- None of the above
73. The insertion of genetic material into human cells for the treatment of a
disorder is called
- Gene cloning
- Gene pharming
- Gene therapy
- Gene sequencing
74. The disease not treated by Ex vivo gene therapy is choose which one is correct:
- SCID
- Diabetes
- Hypercholesterolemia
- All of the above
75. The enzyme ADA is involved in maturation of choose which one is correct:
- RBC
- Platelets
- Lymphocyte
- Macrophages
76. The organism used as vector during treatment of SCID by gene therapy is choose which one is correct:
- Plasmids
- Phage
- Retroviruses
- None of the above
77. The genes for the treatment of SCID are introduced in choose which one is correct:
- Bone marrow
- Heart
- Liver
- None of the above
78. The hypercholesterolemia causes at young age choose which one is correct:
- Diabetes
- Blood pressure
- Heart attack
- All of the above
79. The genes for the treatment of hypercholesterolemia are introduced in choose which one is correct:
- Bone marrow
- Heart
- Liver
- None of the above
80. In which of these in vivo gene therapy is used?
- Cystic fibrosis
- Cancer
- Coronary angioplasty
- All of the above
81. In cystic fibrosis, the gene codes for trans membrane carrier of which ion is
missing choose which one is correct:
- Na
- K
- Cl
- Ca
82. The microscopic vesicles formed during gene therapy of cystic fibrosis are
called choose which one is correct:
- Ribosomes
- Lipososmes
- Endosomes
- Microsomes
83. The solution of Liposomes is sprayed on choose which one is correct:
- Skin
- Joints
- Nostrils
- Mouth
84. The gene therapy in cancer makes the patient tolerant for choose which one is correct:
- Radiotherapy
- Chemotherapy
- Endoscopies
- Gene therapy
85. These are used in angiosplasty choose which one is correct:
- Balloon
- Plasmids
- Gene therapy
- All of the above
86. Which of the following diseases is not treated by in vivo gene therapy?
- Haemophilia
- Diabetes
- Parkinson’s diseases
- All of the above
87. The plants cells can develop complete plants. So they are called choose which one is correct:
- Callous
- Totipotent
- Clone
- None of the above
88. Complete carrot plant was developed from tiny part of phloem by choose which one is correct:
- J. Craig Venter
- Hamilton
- Sanger
- F.C. Steward
89. F. C Steward provided the phloem cells choose which one is correct:
- Sugars
- Vitamins
- Coconut milk
- All of the above
90. An undifferentiated group of cells is called choose which one is correct:
- Callous
- Totipotent
- Clone
- None of the above
91. Callous can form choose which one is correct:
- Root
- Stem
- Shoot
- Complete plant
92. In micropropagation, the structure used is choose which one is correct:
- Stem
- Meristem
- Callous
- Totipotent
93. In micropropagation of meristem, the hormone used is choose which one is correct:
- Gibberellins
- Auxins
- Abscisic acid
- All of the above
94. The plants produced by micropropagation of meristem are called choose which one is correct:
- Callous
- Seedling
- Clonal
- Somaclonal
95. Which of the following is virus free?
- Callous
- Seedling
- Clonal plant
- Adult plant
96. The naked cells of plant are called choose which one is correct:
- Protoplasm
- Cytoplasm
- Protoplast
- Callous
97. The protoplast regenerates and produces choose which one is correct:
- Callous
- Seedling
- Clonal
- Clump
98. The clumps produce choose which one is correct:
- Callous
- Somatic embryo
- Clonal plant
- Adult plant
99. Somatic embryo are encapsulated in gel and are called choose which one is correct:
- Seeds
- Artificial seed
- Clonal plant
- Clump
100. Millions of artificial seed are produced in large tanks called choose which one is correct:
- Thermocycler
- Biopole
- Bioreactors
- None of the above
101. The artificial seeds are produced of which of the following plants?
- Corn
- Tomato
- Mango
- Roses
102. The plants produced by micropropagation from single cell are called choose which one is correct:
- Callous
- Seedling
- Clonal
- Somaclonal
103. Anther is cultured in a medium containing choose which one is correct:
- Sugars
- Vitamins
- Coconut milk
- All of the above