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Biotechnology and It's Applications

79 Questions
All Exams NEET AIIMS
2011 NEET MCQ
AIPMT 2011 Mains
Read the following four statements (A-D) about certain mistakes in two of them :
(A) The first transgenic buffalo, Rosie produced milk which was human alpha-lactalbumin enriched.
(B) Restriction enzymes are used in isolation of DNA from other macro-molecules
(C) Downstream processing is one of the steps of R-DNA technology
(D) Disarmed pathogen vectors are also used in transfer of R-DNA into the host
Which are the two statements having mistakes ?
A.
Statements (B) and (C)
B.
Statements (A) and (C)
C.
Statements (A) and (B)
D.
Statements (C) and (D)
2011 NEET MCQ
AIPMT 2011 Mains
Silencing of mRNA has been used in producing transgenic plants resistant to :
A.
White rusts
B.
Nematodes
C.
Bacterial blights
D.
Bollworms
2011 NEET MCQ
AIPMT 2011 Mains
Bacillus thuringiensis forms protein crystals which contain insecticidal protein. This protein :
A.
is activated by acid pH of the foregut of the insect pest.
B.
binds with epithelial cells of midgut of the insect pest ultimately killing it
C.
is coded by several genes including the gene cry
D.
does not kill the carrier bacterium which is itself resistant to this toxin
2011 NEET MCQ
AIPMT 2011 Prelims
Maximum number of existing transgenic animals is of :
A.
Mice
B.
Cow
C.
Pig
D.
Fish
2011 NEET MCQ
AIPMT 2011 Prelims
The process of RNA interference has been used in the development of plants resistant to :
A.
Nematodes
B.
Fungi
C.
Viruses
D.
Insects
2010 NEET MCQ
AIPMT 2010 Mains
Which one of the following is now being commercially produced by biotechnological procedures ?
A.
Insulin
B.
Morphine
C.
Nicotine
D.
Quinine
2010 NEET MCQ
AIPMT 2010 Prelims
Genetic engineering has been successfully used for producing –
A.
transgenic models for studying new treatments for certain cardiac disease
B.
Animals like bulls for farm work as they have super power
C.
transgenic mice for testing safety of polio vaccine before use in humans
D.
transgenic Cow-Rosie which produces high fat milk for making ghee
2010 NEET MCQ
AIPMT 2010 Prelims
An improved variety of transgenic basmati rice
A.
gives high yield but has no characteristic atoms
B.
Does not require chemical fertilizers and growth hormones
C.
is completely resistant to all insect pests and disease of paddy
D.
gives high yield and is rich in vitamin A
2010 NEET MCQ
AIPMT 2010 Prelims
The genetically-modified (GM) brinjal in India has been developed for:
A.
Enhancing shelf life
B.
Insect-resistance
C.
Drought-resistance
D.
Enhancing mineral content
2010 NEET MCQ
AIPMT 2010 Prelims
Some of the characteristics of Bt cotton are –
A.
High yield and production of toxic protein crystals which kill dipteran pests
B.
High yield and resistance to bollworms
C.
Long fibre and resistance to aphids
D.
Medium yield, long fibre and resistance to beetle pests
2010 NEET MCQ
AIPMT 2010 Prelims
Breeding of crops with high levels of minerals, vitamins and proteins is called –
A.
Biofortification
B.
Biomagnification
C.
Micorpropagation
D.
Somatic hybridisation
2009 NEET MCQ
AIPMT 2009
What is true about Bt toxin ?
A.
The activated toxin enters the ovaries of the pest to sterillise it and thus prevent its multiplication.
B.
Bt protein exists as active toxin in the Bacillus
C.
The concerned Bacillus has antitoxins
D.
The inactive protoxin gets converted into active form in the insect gut
2009 NEET MCQ
AIPMT 2009
Polyethylene glycol method is used for :
A.
Biodiesel production
B.
Seedless fruit production
C.
Energy production from sewage
D.
Gene transfer without a vector
2009 NEET MCQ
AIPMT 2009
The bacterium Bacillus thuringiensis is widely used in contemporary biology as -
A.
Indicator of water pollution
B.
Agent for production of dairy products
C.
Source of industrial enzyme
D.
Insecticide
2009 NEET MCQ
AIPMT 2009
What is antisense technology?
A.
RNA polymerase producing DNA
B.
Production of somaclonal variants in tissue cultures
C.
When a piece of RNA that is complementary in sequence is used to stop expression of a specific gene
D.
A cell displaying a foreign antigen used for synthesis of antigens
2009 NEET MCQ
AIPMT 2009
Transgenic plants are the ones -
A.
Produced after protoplast fusion in artifical medium
B.
Produced by a somatic embryo in artificial medium
C.
Generated by introducing foreign DNA in to a cell and regenerating a plant from that cell
D.
Grown in artificial medium after hybridization in the field
2008 NEET MCQ
AIPMT 2008
Cry I endotoxins obtained from Bacillus thuringiensis are effective against:
A.
Mosquitoes
B.
Flies
C.
Nematodes
D.
Boll worms
2008 NEET MCQ
AIPMT 2008
A transgenic food crop which may help in solving the problem of night blindness in developing countries is
A.
Flavr Savr tomatoes
B.
Bt soybean
C.
Starlink maize.
D.
Golden rice
2008 NEET MCQ
AIPMT 2008
Human insulin is being commercially produced from a transgenic species of:
A.
Escherichia
B.
Mycobacterium
C.
Rhizobium
D.
Saccharomyces
2008 NEET MCQ
AIPMT 2008
Main objective of production/use of herbicide resistant GM crops is to:
A.
eliminate weeds from the field without the use of manual labour
B.
eliminate weeds from the field without the use of herbicides
C.
encourage eco-friendly herbicides
D.
reduce herbicide accumulation in food articles for health safety
2007 NEET MCQ
AIPMT 2007
A genetically engineered micro-organism used successfully in bioremediation of oil spills is a species of-
A.
Trichoderma
B.
Xanthomonas
C.
Bacillus
D.
Pseudomonas
2006 NEET MCQ
AIPMT 2006
Golden rice is a promising transgenic crop. When released for cultivation, it will help in
A.
Herbicide tolerance
B.
Alleviation of vitamin A deficiency
C.
Producing a petrol-like fuel from rice
D.
Pest resistance
2005 NEET MCQ
AIPMT 2005
Bacillus thuringiensis (Bt) strains have been used for designing novel -
A.
Bio-metallurgical techniques
B.
Biofertilizers
C.
Bioinsecticidal plants
D.
Bio-mineralization processes
2005 NEET MCQ
AIPMT 2005
Golden rice is a transgenic crop of the future with the following improved trait -
A.
High lysine (essential amino acid) content
B.
High protein content
C.
Insect resistance
D.
High vitamin – A content
2005 NEET MCQ
AIPMT 2005
Production of a human protein in bacteria by genetic engineering is possible because
A.
The human chromosome can replicate in bacterial cell
B.
The genetic code is universal
C.
Bacterial cell can carry out the RNA splicing reactions
D.
The mechanism of gene regulation is identical in humans and bacteria
2004 NEET MCQ
AIPMT 2004
ELISA is used to detect viruses, wherethe key reagent is :-
A.
Catalase
B.
Southern
C.
DNA probes
D.
Alkaline phosphatase
2004 NEET MCQ
AIPMT 2004
DNA fingerprinting refers to :-
A.
Techniques used for molecular analysis of different specimens of DNA
B.
Anlysis of DNA samples using imprinting devices
C.
Molecular analysis of profiles of DNA samples
D.
Techniques used for identification of fingerprints of individuals
2004 NEET MCQ
AIPMT 2004
The Ti plasmid is often used for making transgenic plants. This plasmid is found in
A.
Agrobacterium
B.
Rhizobium of the roots of leguminous plants
C.
Azotobacter
D.
Yeast as a 2 µm plasmid
2003 NEET MCQ
AIPMT 2003
ELISA is used to detect viruses, wherethe key reagent is :-
A.
Alkaline phosphatase
B.
Southern
C.
DNA probes
D.
Catalase