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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The antibiotics have no effect on viruses because

a.   viruses show the metabolism of their own

b.   viruses are too small in size for antibiotics to act upon them

c.   viruses show no metabolism of their own

d.    viruses produce a thick covering and encyst themselves as endospores

 

Subtopic:  Industrial Products, Beverages & Antibiotics |
 55%
AIIMS - 2015
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The domestic sewage in large cities

(1) has a high BOD as it contains both aerobic and bacteria

(2) is processed by aerobic and then anaerobic bacteria in the secondary treatment in Sewage Treatment plants (STPs)

(3) when treated in STPs does not really require the aeration step as the sewage contains adequate oxygen

(4) has very high amounts of suspended solids and dissolved salts

Subtopic:  Microbes in Sewage Treatment |
 61%
From NCERT
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Which one of the following useful organisms is not a part in production of curd/yoghurt?

(1) S. thermophilus

(2) Lactobacillus bulgaricus

(3) Acetobactor aceti

(4) Streptococcus lactis

Subtopic:  Microbes in Household Products |
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Which one is used/regarded as a biofertilizer?

1. An association between pteridophytes and cyanobacteria Anabaena

2. An association between gymnosperms and Nostoc

3. An association between legume and Rhizobium

4. All of the above

Subtopic:  Microbes as Biofertilizer |
 76%
From NCERT
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Rice wine is 

(1) beer

(2) wine

(3) cider

(4) sake

Subtopic:  Chemistry of Fermented Beverages |
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Name the blank spaces A, B, C and D given in the following table:

Type of Microbe

Scientific Name

Commercial. Product

Bacterium

A

Lactic acid

Fungus

B

Cyclosporin A

C

Monascus purpureus

Statins

Fungus

Penicillium notatum

D

(1) A - Lactobacillus, B - Trichoderma polysporum, C - Yeast (Fungus), D - Penicillin

(2) A - Lactobacillus, B - Trichoderma polysporum, C - Yeast (Algae), D - Penicillin

(3) A - Lactobacillus, B - Trichoderma polysporum, C - Yeast (Prokaryote), D - Penicillin

(4) A - Lactobacillus, B - Trichoderma polysporum, C - Agaricus (Fungus), D - Penicillin

Subtopic:  Industrial Products, Beverages & Antibiotics | Microbes in Household Products | Chemicals, Enzymes & Other Bioactive Molecules |
 82%
From NCERT
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Name the blank spaces a, b, c and d given in the following table:

Type of Microbe

Scientific Name

Commercial Product

Bacterium

A

Clot enzyme

B

Aspergillus niger

Citric acid

Fungus

Trichoderma polysporum

C

Bacterium

D

Butyric add

(1) A - Streptococcus, B - Fungus, C - Cyclosporin-A, D - Clostridium butylicum

(2) A - Clostridium butylicum, B - Streptococcus, C - Fungus, D - Cyclosporin-A

(3) A - Cyclosporin-A, B - Clostridium butylicum, C - Streptococcus, D - Fungus

(4) A - Fungus, B - Cyclosporin-A, C - Clostridium butylicum, D - Streptococcus

Subtopic:  Microbes in Household Products | Chemicals, Enzymes & Other Bioactive Molecules |
 91%
From NCERT
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Which of the following bacteria help in nitrogen fixation from atmosphere?

A. Azotobacter

B. Rhizobium

C. Azospirillum

D. Lactobacillus

(1) A, C, D

(2) A, B, C, D

(3) B, C, D

(4) A, B, C

Subtopic:  Microbes as Biofertilizer |
 88%
From NCERT
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