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
Common cold is not cured by antibiotics because it is
1. caused by a virus
2. caused by a Gram-positive bacterium
3. caused by a Gram-negative bacterium
4. not an infectious disease
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For a biocontrol agent to be part of an integrated pest management, it should be:
1. species-specific and symbiotic
2. free living and broad spectrum
3. narrow spectrum and symbiotic
4. species-specific and inactive on non-target organisms
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