Q. No.Microorganisms are used during which stage of the purification of the sewage water?
(1) Primary treatment
(2) Secondary treatment
(3) None of the above
(4) Both (1) and (2)
Big holes in Swiss cheese are made by a:
| 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. |
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
The primary treatment of waste water involved the removal of:
(1) dissolved impurities
(2) stable substances
(3) toxic substances
(4) harmful bacteria.
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
Which of the following in sewage treatment removes suspended solids?
(1) Tertiary treatment
(2) Secondary treatment
(3) Primary treatment
(4) Sludge treatment
Which of the following is correctly matched for the product produced by them?
1. Acetobacter aceti : Antibiotics
2. Methanobacterium : Lactic acid
3. Penicillium notatum : Acetic Acid
4. Saccharomyces cerevisiae : Ethanol
Match Column I with Column II and select the correct option using the codes given below
|
Column I |
Column II |
|
A. Citric acid |
1. Trichoderma |
|
B. Cyclosporin |
2. Clostridium |
|
C. Statins |
3. Aspergillus |
|
D. Butyric acid |
4. Monascus |
Codes
|
A |
B |
C |
D |
|
|
(1) |
3 |
1 |
2 |
4 |
|
(2) |
3 |
1 |
4 |
2 |
|
(3) |
1 |
4 |
2 |
3 |
|
(4) |
3 |
4 |
1 |
2 |
Which of the following is wrongly matched in the given table?
| Microbe | Product | Application | |
| 1. | Monascus purpureus | Statins | Lowering of blood cholesterol |
| 2. | Streptococcus | Streptokinase | Removal of clot from blood vessel |
| 3. | Clostridium butylicum | Lipase | Removal of oil stains |
| 4. | Trichoderma polysporum | Cyclosporin-A | Immunosuppressive drug |
| A. Saccharomyces cerevisiae | i. Production of immunosuppressive agents |
| B. Monascus purpureus | ii. Ripening of Swiss Cheese |
| C. Trichoderma polysporum | iii. Commercial production of ethanol |
| D. Propionibacterium sharrmanii | iv. Production of blood-cholesterol lowering agents |
Codes
| A | B | C | D | |
| 1. | iii | iv | i | ii |
| 2. | iv | iii | ii | i |
| 3. | iv | ii | i | iii |
| 4. | iii | i | iv | ii |
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