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Free download in PDF Microbes in Human Welfare Objective Type Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams like NEET, AIIMS, JIPMER etc. These short solved questions or quizzes are provided by Gkseries./p>
(1)
Which one is useful as a immunosuppresive agent in organ transplant ?
[A]
All the given
[B]
Cyclosporin-A
[C]
Cyclosporin-L
[D]
Cyclosprin-C
(2)
IARI means
[A]
Indian Agriculture Research Institute
[B]
International Agrochemical Research Institute
[C]
Indian Agrochemical Research Institute
[D]
Indian Agriculture Resource Institute
Answer: Indian Agriculture Research Institute
(3)
Which group is true for the Enzymes of micro organism ?
[A]
Amylase, Protease, Lipase, Protease
[B]
Glycin, Renin, Lipase, Melic Acid
[C]
Lipase, Protease, Lipase, Amylase
[D]
Glyconic acid, protease, Lipase, Amylose
Answer: Lipase, Protease, Lipase, Amylase
(4)
Which of these processes does not give off CO2?
[A]
Lactate fermentation
[B]
Aerobic respiration
[C]
Alcoholic fermentation
[D]
None of the above
Answer: Lactate fermentation
(5)
High biological oxygen demand in a water body means ________
[A]
Water is not polluted
[B]
Water is polluted
[C]
Waterbody contains lots of lifeforms
[D]
None of the above
Answer: Water is polluted
(6)
The guts of various ruminants contain _________
[A]
Acidophiles
[B]
Halophiles
[C]
Mental retardation
[D]
All of the above
(7)
Which of the following microbes are used for the commercial production of citric acid?
[A]
Xanthomonas citri
[B]
Asparagine
[C]
Asparagus
[D]
Aspergillus
(8)
Saccharomyces cerevisiae is used primarily for
[A]
Baking
[B]
Bleaching
[C]
Biofuel
[D]
None of the above
(9)
Acinetobacter baumannii is a _________
[A]
Decomposing bacteria
[B]
Pathogenic bacteria
[C]
Nitrogen-fixing bacteria
[D]
None of the above
Answer: Pathogenic bacteria
(10)
Ethanol can be produced using __________
[A]
Saccharomyces cerevisiae
[B]
Escherichia coli
[C]
Pseudomonas syringae
[D]
None of the above
Answer: Saccharomyces cerevisiae
(11)
Bacillus thuringiensis is used for
[A]
Fermentation of beer
[B]
Biopesticide
[C]
Antibiotic
[D]
None of the above
(12)
Before antibiotics, the first commercial antibacterial available was _____
[A]
Penicillin
[B]
Prontosil
[C]
Azithromycin
[D]
None of the above
(13)
Example of a natural insect repellant
[A]
Citronella oil
[B]
Coconut oil
[C]
Linseed oil
[D]
None of the above
(14)
Why is wine distilled?
[A]
To reduce toxicity
[B]
To enable fermentation
[C]
To prevent spoilage
[D]
To increase the alcohol percentage
Answer: To prevent spoilage
(15)
Which of the following is used as a substrate for alcohol fermentation?
[A]
Maize
[B]
Barley
[C]
Sucrose
[D]
None of the above
(16)
Antibiotics are the most effective on:
[A]
Bacteria
[B]
Virus
[C]
Fungi
[D]
None of the above
(17)
____________ is a pigment that gives a pinkish hue to rhizobium induced root nodules.
[A]
Leghaemoglobin
[B]
Carotenoid
[C]
Mauveine
[D]
None of the above
(18)
Bacillus thuringiensis is widely used as:
[A]
Insecticide
[B]
Weedicides
[C]
Rodenticide
[D]
None of the above
(19)
In Swiss cheese, big holes are made by a
[A]
bacterium producing methane gas
[B]
machine
[C]
fungus releasing a lot of gases while its metabolic activities
[D]
bacterium producing large quantities of carbon dioxide
Answer: bacterium producing large quantities of carbon dioxide
(20)
During which stage of the purification of the sewage water are microbes used?
[A]
Primary treatment
[B]
Secondary treatment
[C]
Tertiary treatment
[D]
Both (1) and (2)
Answer: Secondary treatment
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