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Free Download as PDF of the detailed solutions for class 12 Biology from NCERT or CBSE text book as per exam pattern, to help you in day to day learning. We provide all important questions and answers from chapter Biotechnology Principles and Processes of Biology.
106
What is true of plasmid?
[1]
Part of nuclear chromosome
[2]
Contains genes for vital activities
[3]
Found in viruses
[4]
Widely used in gene transfer
Answer: Widely used in gene transfer
107
The most common substrate used in distilleries for the production of ethanol is
[1]
Molasses
[2]
Corn meal
[3]
Soya meal
[4]
Ground gram
108
Somaclonal variation appears in plants
[1]
Transformed by recombinant DNA technology
[2]
Growing in polluted soil or water
[3]
Exposed to gamma rays
[4]
Raised in tissue culture
Answer: Raised in tissue culture
109
The enzyme employed for amplification of DNA during PCR is commercially obtained from
[1]
Trichoderma reesei
[2]
Bacillus licheniformis
[3]
Streptococcus pyogenes
[4]
Thermus aquaticus
Answer: Thermus aquaticus
110
Cry genes or Bt genes are obtained from
[1]
Cotton pest
[2]
Tobacco plant
[3]
Bacillus thuringiensis
[4]
E – Col
Answer: Bacillus thuringiensis
111
Tobacco plants resistant to a nematode have been developed by the introduction of DNA that produced (in the host cells)
[1]
An antifeedant
[2]
A particular hormone
[3]
Both sense and anti-sense RNA
[4]
A toxic protein
Answer: Both sense and anti-sense RNA
112
Maximum number of existing transgenic animals is of
[1]
Pig
[2]
Fish
[3]
Mice
[4]
Cow
113
Plasmids are suitable vectors for gene cloning because
[1]
these can shuttle between prokaryotic and eukaryotic cells
[2]
these are small circular DNA molecules with their own replication origin site
[3]
these are small circular DNA molecules, which can integrate with host chromosomal DNA
[4]
these often carry antibiotic resistance genes
Answer: these are small circular DNA molecules with their own replication origin site
114
A regulatory body working under MoEF for the release of transgenic crops is
[1]
NBPGR
[2]
GEAC
[3]
NSC
[4]
NIPGR
115
Which enzyme is useful in genetic engineering?
[1]
DNAase
[2]
Amylase
[3]
Lipase
[4]
Restriction endonuclease
Answer: Restriction endonuclease
116
The nitrogen base which is absent in RNA is
[1]
Cytosine
[2]
Adenine
[3]
Guanine
[4]
Thymine
117
One of the following processes involves southern blotting technique
[1]
rDNA technology
[2]
DNA finger printing
[3]
production of transgenic plants
[4]
formation of suspension culture
Answer: DNA finger printing
118
Which is related to genetic engineering?
[1]
Plastid
[2]
Plasmid
[3]
Heterosis
[4]
Mutation
119
Cry1 endotoxins obtained from Bacillus Thuringiensis are effective against:
[1]
Flies
[2]
Mosquitoes
[3]
Boll worms
[4]
Nematodes
120
The plant 'Brassica napus' has been modified to produce ______.
[1]
Vitamin A
[2]
hirudin
[3]
lysine rich seeds
[4]
insulin
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