Select the correct statement

(1) Acetobacter aceti produces citric acid.

(2) Saccharomyces cerevisiae is used as clot buster

(3) Penicillium notanum restrict the growth of Staphylococci

(4) Methanogens are found in aerobic conditions.

 

Subtopic:  Industrial Products, Beverages & Antibiotics |
 76%
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Which of the following statements is incorrect regarding fermentation ?

1. Propionibacterium is used to ferment the cheese.

2. The puffed-up appearance of dough is due to the production of CO2 gas. 

3. Fermentation in muscle produces ethanol.

4. Toddy is made by fermenting sap from palms.

Subtopic:  Chemistry of Fermented Beverages |
 85%
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Which of the following statements is correct?

1. Aspergillus niger is used for producing cyclosporin A.
2. Activated sludge is digested by aerobic bacteria to produce marsh gas.
3. Fleming, Chain & Florey were awarded with Nobel Prize for discovering penicillin.
4. BOD is amount of oxygen produced by bacteria on decomposition.
Subtopic:  Industrial Products, Beverages & Antibiotics |
 80%
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Which of the following microbes is correctly paired with its function ?

(1) Aspergillus niger - Production of lactic acid

(2) Trichoderma polysporum  - Lowers blood cholesterol

(3) Saccharomyces cerevisiae  - Production of citric acid

(4) Methanogenic bacteria - Gobar gas formation 

Subtopic:  Microbes in Production of Biogas |
 90%
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Select the correct pair of microorganism and the product obtained from it.

(1) Monascus purpureus - produces large holes in Swiss cheese.

(2) Saccharomyces cerevisiae - used for making wine and beer after distillation

(3) Streptococuss-produces streptokinase which is used to remove clots.

(4) Aspergillus niger - produces citric acid and butyric acid.

Subtopic:  Chemicals, Enzymes & Other Bioactive Molecules |
 81%
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Which antibiotic has bactericidal effect?

(1) Erythromycin

(2) Penicillin

(3) Both 1 and 2

(4) None of these

Subtopic:  Industrial Products, Beverages & Antibiotics |
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Wine and beer are produced directly by fermentation whereas brandy and whisky require both fermentation and distillation. This is because

(1) fermentation is inhibited at an alcohol level of 10-18%

(2) distillation prolongs storage

(3) distillation improves quality

(4) distillation purifies the beverage

 

 

Subtopic:  Chemistry of Fermented Beverages |
 59%
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Select the incorrect match

(1) Citric acid - Aspergillus niger

(2) Streptokinase - Streptococcus

(3) Butyric acid - Clostridium acetobutylicum

(4) Cyclosporin-A - Monascus purpures

Subtopic:  Chemicals, Enzymes & Other Bioactive Molecules |
 67%
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Which of the following antibiotics is not correctly matched with the source from which it is obtained ?

   

Antibiotic

Source

(1)

Penicillin

Penicillium chrysogenum

(2)

Bacitracin

Bacillus licheniformis

(3)

Griseofulvin 

Penicillium griseofulvum

(4)   

Streptomycin      

Bacillus griseus

Subtopic:  Industrial Products, Beverages & Antibiotics |
 50%
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The preparation and flowering of leaves of tea and tobacco is due to the activities of 

(1) Bacillus subtilis

(2) Bacillus megatherium

(3) Streptococcus lactis

(4) Acetobacter aceti

 54%
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