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WorksheetsMICROBES IN HUMAN WELFARE
Total questions: 30
Worksheet time: 30mins
Which of the following organisms is used in the production of beverages?
Penicillium notatum
Saccharomyces cerevisiae
Aspergillus niger
Clostridium butylicum
Which of the following bacteria has a role in removing clots from our blood vessels?
Bacillus thuringiensis
Clostridium butylicum
Streptococcus
Lactobacillus
The bio-active molecule cyclosporin A is used in –
whooping cough
diphtheria
leprosy
organ-transplant patients
The primary treatment of sewage involves –
digestion
decomposition
sedimentation and filtration
none of these
Biogas contains –
CO2
H2S
CH4
all of these
The bacterium that commonly lives in animal and human intestines is –
Bacillus anthraces
Vibrio cholerae
Escherichia coli
Corynebacterium
Streptomycin is produced from –
Streptomyces scoleus
Streptomyces griseus
Streptomyces fradiae
Streptomyces venezuellae
Which one of the following sets includes bacterial diseases?
Tetanus, tuberculosis, measles
Diphtheria , leprosy, plague
Cholera, typhoid, mumps
Malaria, mumps, poliomyelitis
Which of the following serve as biofertilizer in paddy fields?
Bacteria
Yeast
Cyanobacteria
Fungi
The nutritive media for growing bacteria and other microorganisms in the laboratory is called –
colonies
culture media
baking media
fermentation
The technology of biogas production in India has been developed by the efforts of
A. Khadi and Village Industries Commision (KVIC)
B. Indian Council of Agricultural Research (IARI)
C. Indian Agricultural Research Institute (IARI)
D. Indian Council of Medical Research (ICMR)
A, C, D
C, D
A, C
A, B
The large vessels for growing microbes on an industrial scale are called
Petri dish
Digestors
Biogas vessel
Fermentors.
Which role is played by lactic acid bacteria (LAB) in our stomach?
Beneficial
Harmful
Neutral
All of these
The gas responsible for puffing-up appearance of dough comes from –
aerobic respiration
fermentation
photosynthesis
photorespiration
In cheese manufacture, the micro-organisms are used for –
the souring of milk only
the ripening only
development of resistance to spoilage
Both a and b
Which of the following bacteria help in nitrogen fixation from atmosphere?
A. Azotobacter
B. Rhizobium
C. Azospirillum
D. Lactobacillus
A, C, D
A, B, C, D
B, C, D
A, B, C
The symbiotic association between fungi and roots of higher plants is called –
lichen
mycorrhiza
biofertilizer
BOD
The amount of oxygen required by the microbes in the decomposition of organic matter is called –
chemical oxygen demand
biochemical oxygen demand
total oxygen demand
dissolve oxygen
improved water quality can be achieved by
appropriate use of water
careful water storage and handling
proper land management
all of the above
What is the first step in the water treatment process?
coagulation
filtration and removal of debris, sand, grit, etc.
flocs
concentation
What is a sewage treatment plant?
The place where water is cleaned, filtered and tested before re-entering the water cycle.
The place where water is cleaned, filtered and tested before going to our houses.
The network of pipes that carry sewage (dirty water) from our houses.
The place where water is bottled for drinking.
The semi-solid organic material that comes out of a wastewater treatment plant after completion of the wastewater treatment process is called
wastewater.
pathogenic.
sewage.
sludge.
What is effluent?
the suspended solids in the water
the partially treated wastewater moving through the facility
the solids that come out of the digesters
water-borne diseases
What happens in the digesters?
aerobic bacteria processes organic waste
organic waste is turned into usable fertilizer
anaerobic bacteria processes organic waste
chlorine is added to disinfect biosolids
What is produced in the digesters?
methane gas
chlorine
fertilizer
effluent
Process used in water treatment process where water is pushed through screens, sand, gravel and coal to remove organisms and trash
filtration
chlorination
coagulation
bioreactors
After the clarification step in wastewater treatment, the solid waste called ______ is sold off and the liquid waste called _____ moves on the be filtered and disinfected
sewage and dirty water
sludge and effluent
effluent and slude
dirty water and sewage
Preliminary treatment
prevents toxic chemicals.
removes large objects.
is unnecessary.
is useless.
