Match the following list of microbes and what they are used for:

A. Saccharomyces cerevisiae 1. Production of immunosuppressive agents
B. Monascus purpureus 2. Ripening of Swiss cheese
C. Trichoderma polysporum 3. Commercial production of ethanol
D. Propionibacterium shermanii 4. Production of blood-cholesterol-lowering agents


1. A-3 B-4 C-1 D-2

2. A-4 B-3 C-2 D-1

3. A-4 B-2 C-1 D-3

4. A-3 B-1 C-4 D-2

Subtopic:  Chemicals, Enzymes & Other Bioactive Molecules |
 89%
From NCERT
NEET - 2015
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A high value of BOD (Biochemical Oxygen Demand) indicates that:

1. water is pure
2. water is highly polluted
3. water is less polluted
4. consumption of organic matter in
the water is higher by the microbes
Subtopic:  Microbes in Sewage Treatment |
 84%
From NCERT
NEET - 2015
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What gases are produced in anaerobic sludge digesters?

1. Methane and CO2
2. Methane, Hydrogen Sulphide and CO2
3. Methane, Hydrogen Sulphide and CO
4. Hydrogen Sulphide and CO2

Subtopic:  Microbes in Sewage Treatment |
 91%
From NCERT
AIPMT - 2014
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During sewage treatment, biogases are produced which include:
1. methane, oxygen, hydrogen sulphide
2. hydrogen sulphide, methane, sulphur dioxide
3. hydrogen sulphide, nitrogen, methane
4. methane, hydrogen sulphide, carbon dioxide
Subtopic:  Microbes in Sewage Treatment |
 88%
From NCERT
AIPMT - 2013
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A good producer of citric acid is:

1. Pseudomonas

2. Clostridium

3. Saccharomyces

4. Aspergillus

Subtopic:  Chemicals, Enzymes & Other Bioactive Molecules |
 94%
From NCERT
AIPMT - 2013
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Measuring Biochemical Oxygen Demand (BOD) is a method used for:

1. Estimating the amount of organic matter in sewage water
2. Working out the efficiency of oil-driven automobile engines
3. Measuring the activity of Saccharomyces cerevisiae in producing curd on a commercial scale
4. Working out the efficiency of RBCs about their capacity to carry oxygen

Subtopic:  Microbes in Sewage Treatment |
 95%
From NCERT
AIPMT - 2012
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Monascus purpureus is the yeast used commercially in the production of:

1. Ethanol
2. Streptokinase for removing clots from the blood vessels
3. Citric acid
4. Blood cholesterol-lowering statins

Subtopic:  Chemicals, Enzymes & Other Bioactive Molecules |
 88%
From NCERT
AIPMT - 2012
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A patient brought to a hospital with myocardial infarction is normally immediately given:

1. penicillin 2. streptokinase
3. cyclosporin-A 4. statins
Subtopic:  Chemicals, Enzymes & Other Bioactive Molecules |
 75%
From NCERT
AIPMT - 2012
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Which one of the following microbes forms a symbiotic association with plants and helps them in their nutrition?

1. Azotobacter

2. Aspergillus

3. Glomus

4. Trichoderma

Subtopic:  Microbes as Biofertilizer |
 75%
From NCERT
AIPMT - 2012
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Yeast is used in the production of:

1. Citric acid and lactic acid

2. Lipase and pectinase

3. Bread and beer

4. Cheese and butter

Subtopic:  Chemistry of Fermented Beverages |
 93%
From NCERT
AIPMT - 2012
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