1.
Ultrasound of how much frequency is beamed into human body for sonography ?
A
$$15 - 3\, MHZ$$
B
$$1 - 15 \,MHZ$$
C
$$45 - 70\, MHZ$$
D
$$30 - 45\, MHZ$$
Answer :
$$1 - 15 \,MHZ$$
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2.
Cry endotoxins obtained from Bacillus thuringiensis are effective against
A
mosquitoes
B
flies
C
nematodes
D
boll worms
Answer :
boll worms
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3.
Genetic engineering has been successfully used for producing:
A
transgenic mice for testing safety of polio vaccine before use in humans
B
transgenic models for studying new treatments for certain cardiac diseases
C
transgenic cow - rosie which produces high fat milk for making ghee
D
animals like bulls for farm work as they have super power
Answer :
transgenic mice for testing safety of polio vaccine before use in humans
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4.
A free living nitrogen-fixing cyanobacterium which can also form symbiotic association with the water form Azolla is
A
Anabaena
B
Tolypothrix
C
Chlorella
D
Nostoc
Answer :
Anabaena
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5.
Some of the characteristics of Bt cotton are:
A
long fibre and resistance to aphids
B
medium yield, long fibre and resistance to beetle pests
C
high yield and production of toxic protein crystals which kill dipteran pests
D
high yield and resistance to bollworms
Answer :
high yield and resistance to bollworms
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6.
Mechanism of action of antibiotics are
A
Disruption of cell wall
B
Inhibition of DNA/RNA synthesis
C
Disruption of plama lemma
D
All of the above
Answer :
All of the above
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7.
Use of bioresources by multinational companies and organisations without authorisation from the concerned country and its people is called
A
Bio-infringement
B
Biopiracy
C
Bioexploitation
D
Biodegradation
Answer :
Biopiracy
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8.
Rate limiting step inbiogas production is
A
Methane
B
Cellulose
C
Starch
D
Acetic acid
Answer :
Cellulose
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9.
Biogas is produced by anaerobic breakdown of biomass of agricultural waste by methanogenic bacteria. It is a
A
One step process
B
Two step process
C
Three step process
D
Multistepprocess
Answer :
Three step process
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10.
Propionic-bacteria is an important source of
A
Vitamin-C
B
Cobalamin
C
Sugars
D
Proteins
Answer :
Cobalamin
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