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MCQ Questions for Class 12 Biology Set 6
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1. Who discovered Restricted endonucleas enzymes?
Smith and Nathane
Baiger
Waxman
Fleming
2. DNA obtained for DNA finger printing:
W.B.C.
Hair root cells
Body fluids
None of these
3. Two microbes found tb be very useful in Genetic Engineering are:
Excherichia coli and Agrobacterium tumefaciens
Vibrio cholarae and a tailed bacteriophage
Diplococcus sp. and Pseudomonas sp.
Crown gall bacterium and Caenorhabdities elegans
4. Plasmid is a:
Fungus
Plasmid
Part of Plasma membrane
Extra chromosomal DNA in bacterial cell
5. Restriction endonuclease cuts:
One stand of DNA at specific site
Both strands of DNA
Both strands of DNA at any site
Single strand of RNA
6. Restrictipn endonucleases are most widely used in recombinant DNA technology. They are obtained from :
Plasmids
AH prokaryotic cells
Bacteriophages
Bacterial cells
7. Golden rice is a promising transgenic crop. When released for cultivation, it will help in :
High lysin content
Pest resistance
High protien content
High vitamin A content
8. Triticale, first man made cereal crop, has been obtained by crossing wheat with:
Rye
Pearl millet
Sugarcane
Barley
9. Viral genome incroporatcd into host DNA is called:
Prophase
Protophage
Bacteriophage
None of these
10. DNA element with ability to change its position is called:
Cistron
Transposon
Intron
Ricon
11. Restriction Endonuclease used in RDT obtained from:
Plasmid
Bacterial ceils
Bacterophages
All Prokaryotic cells
12. Recombinant DNA technology discovered by:
Hargobind Khoorana
James D. Watsan
S. Kohen and H. Boer
Sulton and Boveri
13. Biopiracy is related to the following:
Traditional knowledge
Biomolecules and Bioresources, Isolation of gene from Bioresources
Bioresources
All of the above
14. Some bacterial occured B-7 Toxin’s crystal not kill the Bacteria because of:
Bacteria is Antoxin
Toxin is unripened
Toxin is inactive
Bacteria enclosed toxin a special sell
15. Desired properties plants and Animals are possible by Which reproduction.
Genetic Engineering
Chromosomal Engineering
Ekabana technology
Bonsai technology
16. By means of following Trans gene expression obtained:
Inhibition of a Innate gene
An occured Biosynthetic passway develop
A protein occured with genotype expressed his desired
None of the above
17. First Transjenic crop was :
Cotton
Alsi
Pea
Tobacco
18. Adjoining of exotic gene is crop is called :
Genetic Engineering
Bio architecture
Tissue culture
Immunisation
19. Transgenic Bacteria and m the making of following :
Epinephrin
Human Insullin
Glutanin
Thyroxin
20. Transgenic Golden Rice Highly Nutrient value for:
Lysine
Methionine
Glutanin
Vitamin-A
21. B7 Toxsin is :
Intracellular lipid
Intracellular crystal protein
Extracellular Crystal protein
Lipid
22. In a Transgenic crop gene for following:
New protein synthesis
Resistance from Antibiotics
In the formation enzyme for Antibiotics
All of these
23. Monoclonal antibodies are obtained from:
One parent for one antigen
Different parents for one antigen
One parent for many antigens
Many parents for many antigens
24. Which Vitamin has been transferred to golden rice?
Vit-B12
Vit-A
Vit-D
Vit-C
25. Which one of the following is a step of PCR?
Denaturation
Annealing
Extension
All of these
26. The Ti plasmid used in genetic engineering is obtained from:
Bacillus thruingiensis
E. Coii
Agrobacterium hizogenes
Agrobacterium tumefaciens
27. From which one of the following plants, the insecticide pyrethrum is prepared.
Cymohopogen
Tephrosia
Crysanthemum
Vitivera
28. The sheep ‘Dolly’ was cloned by using somatic cells from donor’s:
Udder
Skin
Tongue
Earlobe
29. The confirmatory test used to diagnose AIDA is:
ELISA
Western Plot
ESR
PCR
30. Natural genetic engineer is :
Bacillus subtilis
Pseudomonas sp.
Escherichia coli
Agrobacterium tumefaciens
31. Bt toxin is :
Intracellular lipid
Intracellular crystalline protein
Extracellular crystalline protein
Lipid
32. Golden rice is a transgenic crop of the future with the following improved trail:
Insec resistance
Hight lysine (essential amino acid) content
High protein content
High vitamin A content
33. First biochemical to be produced commercially by microbial cloning and genetic engineering:
Human insulin
Penicillin
Interferons
Fertility factor
34. A technology which has found immense use in solving cases of disputed percentage is:
Polymerase chain reaction
DNA finger printing
None of these
Both (a) and (b)
35. Anticoagulant hirudin is found in:
In Snake
In Lizard
In Leech
In Scorpion
36. Herbicide resistant gene in plants is:
Ct
Mt
Bt
Gst
37. The species used as natural genetic engineer is :
Agrobacterim tumefaciens
Bacillus thruingiensis
Aspergillus
Drosophila
38. Most widely used Bioweapon is:
Bacillus subtilis
Biometallurgial techniques
Bacillus anthracis
Bioinsecticidal plant
39. Bacillus thruingiensis (Bt) strains have been used for designing nobel:
Biofertilizers
Biometallurgical techniques
Biomineralization processes
Bioinsecticidal plants
40. Habitat together with functions of a species constitute its:
Topography
Trophic level
Boundary
Ecological niche
41. The maximum growth rate occurs in :
Lag phase
Exponential, phase
Stationary phase
Senescent phase
42. In which one of the following habitats, does the diurnal temperature of soil surface veiw most?
Shrub land
Forest
Desert
Grassland
43. Science linking heredity with environment is:
Ecology
Ecophysiology
Genecology
Genetics
44. Submerged hydrophytes havedisseced leaves for:
Decreasing surface area
Increasing surface area
Reducing effect pf water currents
Increasing number of stomata
45. Water holding capacity is maximum in:
Clay
Sand
Silt
Gravel
46. Animals undergo inactive stage during winters. It is called :
Acclimatisation
Hibernation
Aestivation
Adapatation
47. Praying mantis is a good example of:
Camouflage
Mullarian mimicry
Warning colouration
Social insect
48. Niche overlap is:
Mutualism between two species
Active cooperation between two species
Tjvo different parasites on same food
Sharing resources between two species
49. Animals have innate ability to escape from predation. Select the incorrect example:
Colour change in Chameleon
Enlargement of body by swallowing air in puffer fish
Poison fangas of snakes
Melaninin in moths
50. Ozone protects biosphere from high energetic:
Infra-red rays
Ultraviolet rays
X-rays
gamma rays
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