Monascus purpureus is a yeast used commercially in the production of
1. Citric acid
2. Blood cholesterol lowering statins
3. Ethanol
4. Streptokinase for removing clots from the blood vessels.
The domestic sewage in large cities
1. When treated in STPs does not really require the aeration step as the sewage contains adequate oxygen.
2. Has very high amounts of suspended solids and dissolved salts.
3. Has a high BOD as it contains both aerobic and anaerobic bacteria.
4. Is processed by aerobic and then anaerobic bacteria in the secondary treatment in sewage treatment plants (STPs).
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A good producer of citric acid is
1. Aspergillus
2. Pseudomonas
3. Clostridium
4. Saccharomyces
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.
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Match the following list of microbes and their importance.
(a) |
Saccharomyces cerevisiae |
(i) |
Production of immunosuppressive drug |
(b) |
Moancus purpureus |
(ii) |
Ripening of Swiss cheese |
(c) |
Trichoderma polysporum |
(iii) |
Commercial production of ethanol |
(d) |
Propionibacterium shermanii |
(iv) |
Production of blood cholesterol lowering agents |
(a) (b) (c) (d)
1. (iii) (i) (iv) (ii)
2. (iii) (iv) (i) (ii)
3. (iv) (iii) (ii) (i)
4. (iv) (ii) (i) (iii)
Which of the following is wrongly matched in the given table?
Microbe |
Product |
Application |
|
1. |
Trichoderma polysporum |
Cyclosporin A |
Immunosuppressive drug |
2. |
Monascus purpureus |
Statins |
Lowering of blood cholesterol |
3. |
Streptococcus |
Streptokinase |
Removal of clot from blood vessel |
4. |
Clostridium butylicum |
Lipase |
Removal of oil stains |
Select the mismatch:
1. Rhodospirillum - Mycorrhiza
2. Anabaena - Nitrogen fixer
3. Rhizobium - Alfalfa
4. Frankia - Alnus
Which of the following is correctly matched for the product produced by them?
1. Methanobacterium : Lactic acid
2. Penicillium notatum : Acetic acid
3. Saccharomyces cerevisiae : Ethanol
4. Acetobacter aceti : Antibiotics
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Conversion of milk to curd improves its nutritional value by increasing the amount of
1. Vitamin B12
2. Vitamin A
3. Vitamin D
4. Vitamin E
Probiotics are
1. live microbial food supplement
2. safe antibiotics
3. cancer-inducing microbes
4. new kind of food allergens