Microbes In Human Welfare — DPP 3

20 NEET questions from Microbes In Human Welfare, with answers and explanations. Attempt it as a timed test to get scoring, accuracy breakdown and mistake tracking.

Attempt this test free 20 questions · 30 minutes · +80 marks
1
Yeast (Saccharomyces cerevisiae) is used in the industrial production of:
  1. A Butanol
  2. B Citric acid
  3. C Tetracycline
  4. D Ethanol
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Correct answer: D

2
Biogas can be a good substitute for:
  1. A Fuel wood
  2. B Petroleum and oil
  3. C Coal
  4. D Charcoal
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Correct answer: A

3
Production of beverages and antibiotics on an industrial scale requires growing microbes in very large vessels called:
  1. A Settling tank
  2. B Fermentors
  3. C Biovessel
  4. D Agitator
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Correct answer: B

4
Which of the following acts by competitively inhibiting the enzyme responsible for cholesterol synthesis?
  1. A Cyclosporin A
  2. B Statins
  3. C Streptokinase
  4. D Lipase
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Correct answer: B

5
Which of the following is one of the advantages of application of baculoviruses as bioinsecticides?
  1. A They are not used in IPM.
  2. B They are less effective.
  3. C They are species - specific.
  4. D They have negative impact on human.
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Correct answer: C

6
BOD test measures the rate of uptake of _________ by microorganisms.
  1. A carbon dioxide
  2. B hydrogen sulphide
  3. C carbon and hydrogen
  4. D oxygen
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Correct answer: D

7
Mycorrhiza is helpful in;
  1. A synthesis of food.
  2. B getting nutrients from soil.
  3. C providing resistance against different regulators.
  4. D increase the infertility of soil.
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Correct answer: B

8
If wheat field is inoculated with Rhizobium;
  1. A soil will become nitrogen rich.
  2. B no effect on soil nitrogen.
  3. C soil will be depleted of nitrogen.
  4. D soil will become rich in calcium.
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Correct answer: B

9
Which type of cheese is ripened by specific fungi?
  1. A Roquefort cheese
  2. B Swiss cheese
  3. C Cheddar cheese
  4. D Parmesan cheese
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Correct answer: A

10
Baculoviruses are used as biological control agents that attack:
  1. A Insects
  2. B Mammals
  3. C Other arthropods
  4. D Both (1) and (3)
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Correct answer: D

11
The first antibiotic to be isolated was:
  1. A Tetramycin
  2. B Streptomycin
  3. C Neomycin
  4. D Penicillin
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Correct answer: D

12
If we need to protect our crops from mosquitoes then we can use:
  1. A Ladybird beetle
  2. B Dragonflies
  3. C Bacillus thuringiensis
  4. D Aphids
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Correct answer: B

13
In cheese, microorganisms are required for:
  1. A Ripening
  2. B Souring of milk
  3. C Development of resistance to spoilage
  4. D Both (1) and (2)
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Correct answer: D

14
The organisation/institution that played a great role in developing a technology of producing biogas from cow dung in India was:
  1. A Oil and Natural Gas Commission
  2. B Gas Authority of India
  3. C Indian Agricultural Research Institute and Khadi and Village Industries Commission
  4. D Indian Oil Corporation
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Correct answer: C

15
Which of the following bacteria convert milk into curd?
  1. A Propionibacterium
  2. B Lactobacillus
  3. C Streptococcus
  4. D Bacillus
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Correct answer: B

16
Some blue green algae can be used as biofertiliser as they are;
  1. A photosynthetic.
  2. B surrounded by mucilage.
  3. C growing everywhere.
  4. D capable of fixing nitrogen.
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Correct answer: D

17
During secondary treatment, microbes consume the major part of the organic matter in the effluent This significantly:
  1. A Reduces BOD
  2. B Increases $\mathrm{CO}_{2}$ consumption
  3. C Increases BOD
  4. D None of these
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Correct answer: A

18
Statins, a bioactive molecule, inhibits the enzyme responsible for synthesis of:
  1. A Carbohydrate
  2. B Protein
  3. C Vitamins
  4. D Cholesterol
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Correct answer: D

19
Methane content of biogas is:
  1. A 24.6%
  2. B 55.8%
  3. C 8%
  4. D 4%
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Correct answer: B

20
Cyclosporin-A is obtained from:
  1. A Bacillus subtilis
  2. B Trichoderma polysporum
  3. C Monascus purpureus
  4. D Aspergillus niger
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Correct answer: B

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