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WorksheetsMICROBES IN HUMAN WELFARE
Total questions: 15
Worksheet time: 8mins
Which of these processes does not give off CO2?
Lactate fermentation
Aerobic respiration
Alcoholic fermentation
High biological oxygen demand in a water body means ________
Water is not polluted
Water is polluted
Waterbody contains lots of lifeforms
The vitamin whose content increases following the conversion of milk into curd by lactic acid bacteria is:
a. vitamin C
b. vitamin D
c. vitamin B12
d. vitamin E
The primary treatment of waste water involves the removal of:
a. dissolved impurities
b. stable particles
c. toxic substances
d. harmful bacteria.
The guts of various ruminants contain _________
Acidophiles
Halophiles
Methanogens
All of the above
The free-living fungus Trichoderma can be used for:
a. killing insects
b. biological control of plant diseases
c. controlling butterfly caterpillars
d. producing antibiotics
Which of the following microbes are used for the commercial production of citric acid?
Xanthomonas citri
Azolla
Azospirillum
Aspergillus
Bacillus thuringiensis is used for
Fermentation of beer
Biopesticide
Antibiotic
None of the above
Why is wine distilled?
To reduce toxicity
To enable fermentation
To prevent spoilage
To increase the alcohol percentage
Identify the function of statin
Removal of oil stains
Removal of clots from blood vessels
Lowering of blood cholesterol
Immuno-suppressive agent
State the function of cyclosporin A
Removal of oil stains
Removal of clots from blood vessels
Lowering of blood cholesterol
Immuno-suppressive agent
Streptokinase is isolated from
Streptococcus bacteria
Staphylococcus bacteria
Saccharomyces Yeast
Antibiotics are the most effective on:
Bacteria
Virus
Fungi
None of the above
The technology of biogas production from cow dung was developed in
India largely due to the efforts of:
a. Gas Authority of India
b. Oil and Natural Gas Commission
c. Indian Agricultural Research Institute and Khadi & Village
Industries Commission
d. Indian Oil Corporation.
Big holes in Swiss cheese are made by a:
a. a machine
b. a bacterium that produces methane gas
c. a bacterium producing a large amount of carbon dioxide
d. a fungus that releases a lot of gases during its metabolic activitie
