Match the following list of bioactive substances and their roles:

Bioactive Substance Role
A.  Statin i.  Removal of oil stains
B.  Cyclosporin A  ii.  Removal of clots from blood vessels
C.  Streptokinase iii.  Lowering of blood cholesterol
D.  Lipase iv.  Immuno-suppressive agent

Choose the correct match:

1.A-ii, B-iii, C-i, D-iv2.A-iv, B-ii, C-i, D-iii
3.A-iv, B-i, C-ii, D-iii4.A-iii, B-iv, C-ii, D-i

Subtopic:  Chemistry of Fermented Beverages | Microbes in Household Products |
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The primary treatment of wastewater involves the removal of:

1. dissolved impurities 2. stable particles
3. toxic substances 4. harmful bacteria
Subtopic:  Microbes in Sewage Treatment |
 63%
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The technology of biogas production from cow dung was developed in India largely due to the efforts of:

1. Gas Authority of India
2. Oil and Natural Gas Commission
3. Indian Agricultural Research Institute and Khadi & Village Industries Commission
4. Indian Oil Corporation
Subtopic:  Microbes in Production of Biogas |
 95%

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The free-living fungus Trichoderma can be used for:

1. killing insects

2. biological control of plant diseases

3. controlling butterfly caterpillars

4. producing antibiotics

Subtopic:  Microbes in Biocontrol Agent |
 79%
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Mycorrhiza does not help the host plant in:

1. Enhancing its phosphorus uptake capacity
2. Increasing its tolerance to drought
3. Enhancing its resistance to root pathogens
4. Increasing its resistance to insects
Subtopic:  Microbes in Biocontrol Agent |
 69%
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Which one of the following is not a nitrogen-fixing organism?

1.  Anabaena 2.  Nostoc
3.  Azotobacter 4.  Pseudomonas

Subtopic:  Microbes as Biofertilizer |
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Big holes in Swiss cheese are made by:

1. a machine
2. a bacterium that produces methane gas
3. a bacterium producing a large amount of carbon dioxide
4. a fungus that releases a lot of gases during its metabolic activities.
Subtopic:  Industrial Products, Beverages & Antibiotics |
 89%
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The residue left after methane production from cattle dung is:

1. burnt 2. buried in landfills
3. used as manure 4. used in civil construction
Subtopic:  Microbes as Biofertilizer |
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Methanogens do not produce:

1. oxygen 2. methane
3. hydrogen sulfide 4. carbon dioxide

Subtopic:  Microbes in Production of Biogas |
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Match the items in Column ‘A’ and Column ‘B’ and choose the correct answer:

Column I Column II
A.  Lady bird i. Methanobacterium
B.  Mycorrhiza  ii. Trichoderma
C.  Biological control  iii.  Aphids
D.  Biogas  iv. Glomus

The correct answer is:

1. A-ii, B-iv, C-iii, D-i

2. A-iii, B-iv, C-ii, D-i

3. A-iv, B-i, C-ii, D-iii

4. A-iii, B-ii, C-i, D-iv

Subtopic:  Microbes in Biocontrol Agent |
 89%
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