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Microbes in human welfare

Total questions: 100

Worksheet time: 50mins

Name
Class
Date
1.

Which of the following organisms is used in the production of beverages?

a)

Penicillium notatum

b)

Saccharomyces cerevisiae

c)

Aspergillus niger

d)

Clostridium butylicum

2.

Which of the following bacteria has a role in removing clots from our blood vessels?

a)

Bacillus thuringiensis

b)

Clostridium butylicum

c)

Streptococcus

d)

Lactobacillus

3.

The bio-active molecule cyclosporin A is used in –

a)

whooping cough

b)

diphtheria

c)

leprosy

d)

organ-transplant patients

4.

The primary treatment of sewage involves –

a)

digestion

b)

decomposition

c)

sedimentation and filtration

d)

none of these

5.

Biogas contains –

a)

CO2

b)

H2S

c)

CH4

d)

all of these

6.

The bacterium that commonly lives in animal and human intestines is –

a)

Bacillus anthraces

b)

Vibrio cholerae

c)

Escherichia coli

d)

Corynebacterium

7.

Streptomycin is produced from –

a)

Streptomyces scoleus

b)

Streptomyces griseus

c)

Streptomyces fradiae

d)

Streptomyces venezuellae

8.

Which one of the following sets includes bacterial diseases?

a)

Tetanus, tuberculosis, measles

b)

Diphtheria , leprosy, plague

c)

Cholera, typhoid, mumps

d)

Malaria, mumps, poliomyelitis

9.

During which stage of sewage treatment microbes are used?

a)

Primary treatment

b)

Secondary treatment

c)

Tertiary treatment

d)

All of these

10.

Which of the following serve as biofertilizer in paddy fields?

a)

Bacteria

b)

Yeast

c)

Cyanobacteria

d)

Fungi

11.

What does a high value of BOD(Biochemical Oxygen Demand) indicate?

a)

That water is pure

b)

that water is less polluted

c)

that water is highly polluted

d)

that consumption of organic matter by microbes is higher in the water

12.

What gases are produced in anaerobic sludge digesters?

a)

Methane and CO2 only

b)

Methane, Hydrogen sulphide and CO2

c)

Methane, hydrogen sulphide and O2

d)

Hydrogen sulphide and CO2

13.

Monascus purpureus is a yeast used commercially in the production of

a)

ethanol

b)

streptokinase for removing clots from the blood vessels.

c)

citric acid

d)

blood cholesterol lowering statins.

14.

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 (ICAR)

C. Indian Agricultural Research Institute (IARI)

D. Indian Council of Medical Research (ICMR)

a)

A, C, D

b)

C, D

c)

A, C

d)

A, B

15.

The gas responsible for puffing-up appearance of dough comes from:

a)

Aerobic respiration

b)

Fermentation

c)

Photosynthesis

d)

Photorespiration

16.

Acetic acid is produced by a:

a)

Fungus

b)

Bacterium

c)

Yeast

d)

Virus

17.

Statins used for lowering blood-cholesterol level are extracted from:

a)

Algae

b)

Bacteria

c)

Virus

d)

Yeast

18.

The amount of oxygen required by the microbes in the decomposition of organic matter is called:

a)

Chemical oxygen demand

b)

Biological oxygen demand

c)

Biochemical oxygen demand

d)

Dissolve oxygen

19.

The solids which settle after primary treatment of sewage are called:

a)

Primary sludge

b)

Activated sludge

c)

Flocs

d)

Total solids

20.

a)

A - Sludge; B - Methane, Oxygen; C - Dung, water

b)

A - Sludge; B - Methane, Carbon dioxide; C - Dung, water

c)

A - Sludge; B - Ethylene, Carbon dioxide; C - Dung, water

d)

A - Sludge; B - Methane, Carbon dioxide; C – Sewage

21.

A patient brought to a hospital with myocardial infarction is normally immediately given:

a)

Penicillin

b)

Streptokinase

c)

Cyclosporin-A

d)

Statins

22.

Lactic Acid Bacteria grow in

a)

Milk

b)

Curd

c)

Water

d)

Juice

23.

Alexander Fleming was working on

a)

Salmonella

b)

Penicillin notatum

c)

Streptococcus

d)

Staphylococci

24.

The oily stains from laundry can be removed by

a)

Lipases

b)

Esterase

c)

Ligases

d)

Endonuclease

25.

Which of the following is used in organ transplant patients?

a)

Cyclosporin A

b)

Statins

c)

Streptokinase

d)

Pectinase

26.

Which of the following show the competitive inhibition in the pathway of cholesterol synthesis?

a)

Cyclosporin A

b)

Statins

c)

Streptokinase

d)

Citrate

27.

The significance of Flocs in secondary Treatment is not

a)

Consumption of organic matter

b)

Reduction of BOD

c)

Reduction in polluting potential

d)

Reduction of inorganic salts

28.

KVIC stands for

a)

Khadi and village Institution Commission

b)

Khadi and Village Industries Company

c)

Khadi and Village Industries Commission

d)

Kanpur and Vallore industries Commission

29.

In anaerobic sludge digesters, the anaerobic bacteria

a)

Digest Fungi

b)

Digest Bacteria

c)

Both A and B

d)

Digest the organic matter

30.

The dough used for making bread is fermented by

a)

bacteria

b)

Yeast

c)

fungi

d)

algae

31.

Which of the following bacteria convert milk into curd?

a)

Propionibacterium

b)

Lactobacillus

c)

Streptococcus

d)

Bacillus

32.

The large vessels for growing microbes on an industrial scale are called

a)

Petri dish

b)

digestors

c)

biogas vessel

d)

fermentors

33.

Which of the following organisms is used in the production of beverages?

a)

Penicillium notatum

b)

Saccharomyces cerevisiae

c)

Aspergillus niger

d)

Clostridium butylicum

34.

The chemical substances produced by some microbes which can kill or retard the growth of other microbes are called –

a)

toddy

b)

lactic acid

c)

antibiotics

d)

ethanol

35.

Which of the following antibiotics was discovered first?

a)

Streptomycin

b)

Neomycin

c)

Erythromycin

d)

Penicillin

36.

Citric acid is produced by –

a)

Acetobacter aceti (a bacterium)

b)

Aspergillus niger (a fungus)

c)

Yeast (a fungus)

d)

Streptococcus (a bacterium)

37.

Cyclosporin A is produced from –

a)

Trichoderma polysporum (a fungus)

b)

Bacillus (a bacterium)

c)

Aspergillus (a fungus)

d)

all of these

38.

Baculoviruses (Nucleopolyhedrovirus) does not show

a)

Host specify

b)

Narrow spectrum applications

c)

Effects on non-target pathogens

d)

Utility in IPM programme

39.

Streptokinase, a clot buster used to remove clots from blood vessels of patients of myocardial infraction is obtained from

a)

Streptomyces

b)

Genetically modified Streptococcus bacteria

c)

Mortierella renispora

d)

Candida lipolytica

40.

A biocontrol agent to be a part of an integrated pest management should be

a)

Species-specific and inactive on nontarget organisms

b)

Species-specific and symbiotic

c)

Free living and broad spectrum

d)

Narrow spectrum and symbiotic

41.

Which of the following can be used as a biocontrol agent in the treatment of plant disease?

a)

Trichoderma

b)

Chlorella

c)

Anabaena

d)

Lactobacillus

42.

Monascus purpureus is a yeast used commercially in the production of

a)

ethanol

b)

streptokinase for removing clots from the blood vessels.

c)

citric acid

d)

blood cholesterol lowering statins.

43.

The solids which settle after primary treatment of sewage are called:

a)

Primary sludge

b)

Activated sludge

c)

Flocs

d)

Total solids

44.

Which of the following show the competitive inhibition in the pathway of cholesterol synthesis?

a)

Cyclosporin A

b)

Statins

c)

Streptokinase

d)

Citrate

45.

Which of the following food items is produced by fermentation by the microbes?

A. Idli

B. Dosa

C. Toddy

D. Cheese

a)

A, B, C, D

b)

C, D

c)

A, C

d)

A, B, C

46.

Large holes in Swiss cheese are formed due to production of a large amount of CO2 by

a)

Propionobacterium

b)

Mycobacterium

c)

Saccharomyces

d)

Penicillium

47.

Scientists have introduced _________ gene into plants to impart resistance to insect pests.

a)

(a) Ct gene

b)

(b) Bt gene

c)

(c) Tt gene

d)

(d) Mt gene

48.

IPM stands for

a)

(a) Indian Pollution Management

b)

(b) Institute of Pest Management

c)

(c) Integrated Pest Management

d)

(d) Institute of Pollution Management

49.

The symbiotic association between fungi and roots of higher plants is called –

a)

lichen

b)

mycorrhiza

c)

biofertilizer

d)

BOD

50.

BOD can be defined as

a)

(a) Amount of CO2 consumed if all the inorganic matter in one litre of water is oxidized by bacteria.

b)

(b) Amount of O2 consumed if all the organic matter in one decilitre of water is reduced by bacteria.

c)

(c) Amount of O2 consumed if all the organic matter in one litre of water is oxidized by bacteria.

d)

(d) Amount of O2 consumed if all the inorganic matter in one litre of water is oxidized by bacteria.

51.

The remaining major part of activated sludge is pumped into large tanks called _________.

a)

(a) Aerobic fermenters

b)

(b) Anaerobic fermenters

c)

(c) Aerobic Sludge digesters

d)

(d) Anaerobic sludge digesters

52.

The gases that evolve from anaerobic sludge digester constitute _________.

a)

(a) Natural gas

b)

(b) Biogas

c)

(c) Water gas

d)

(d) None of these

53.

What is the role of bacteria present in the rumen of cattle?

a)

(a) Production of methane

b)

(b) Regulation of digestion

c)

(c) Breakdown of cellulose

d)

(d) Synthesis of polysaccharides

54.

Dragonflies are useful to get rid of _________.

a)

(a) Ladybird

b)

(b) Aphids

c)

(c) Mosquitoes

d)

(d) Both (b) and (c)

55.

_________ are free living bacteria which fix atmospheric nitrogen in soil.

a)

(a) Azobacterium

b)

(b) Acetobacterium

c)

(c) Azotobacter

d)

(d) Azabacterium

56.

The term "Anti-biotic" was coined by?

a)
b)
c)
d)
57.

Antibiotics are mostly obtained from?

a)
b)
c)
d)
58.

Which one of the following is not present in Yogurt?

a)

Lactobacillus bulgaricus

b)

Streptomyces thermophilus

c)

Lactococcus lactis

d)

Propionibacterium sharmanii

59.

Aspergillus niger produces ?

a)
b)
c)
d)
60.

Clostridium butylicum produces?

a)
b)
c)
d)
61.

Lactobacillus produces which compound?

a)
b)
c)
d)
62.

Trichoderma polysporum produces which compound?

a)
b)
c)
d)
63.

Which of the following is not used in making cheese?

a)

Propionibacterium sharmanii

b)

Penicillium roqueforti

c)

Pencillium camemberti

d)

Saccharomyces cerviseae

64.

Streptomyces griseus produces which antibiotic?

a)
b)
c)
d)
65.

Streptomyces aureofaciens produces which antibiotic?

a)
b)
c)
d)
66.

Streptomyces fradiae produces which antibiotic?

a)
b)
c)
d)
67.

Streptomyces Venezuela produces the antibiotic

a)
b)
c)
d)
68.

Streptomyces erythreus produces an antibiotic

a)
b)
c)
d)
69.

Penicillin is produced by?

a)

Penicillium notatum

b)

Penicillium chrysogenum

c)

Both P.notatum and P.chrysogenum

d)

None of the above

70.

Streptomyces aureofaciens produces which antibiotic?

a)
b)
c)
d)
71.

Streptomyces rimosus produces which antibiotic

a)
b)
c)
d)
72.

Streptomyces erythreus produces an antibiotic

a)
b)
c)
d)
73.

Cephalosporium acremonium produces the antibiotic molecule

a)
b)
c)
d)
74.

Primary treatment of sewage involves

a)

Physical treatment

b)

Filtration

c)

Sedimentation

d)

All of the above

75.

Which of the following image depicts primary treatment of sewage ?

a)
b)
c)
d)
76.

What does this image represent?

a)

Waste water treatment

b)

Sewage treatment plant

c)

Drainage treatment plant

d)

All of the above

77.

Which image represents both primary and secondary sewage treatment?

a)
b)
c)
d)
78.

Secondary treatment is also known as?

a)

Biological treatment

b)

Physical treatment

c)

Chemical treatment

d)

Anthropogenic treatment

79.

Flocs are formed during which stage in the treatment process of sewage water ?

a)

Primary

b)

Secondary

c)

Tertiary

d)

Quaternary

80.

Statins used for lowering blood-cholesterol level are extracted from:

a)

Algae

b)

Bacteria

c)

Virus

d)

Yeast

81.

In anaerobic sludge digesters, the anaerobic bacteria

a)

Digest Fungi

b)

Digest Bacteria

c)

Digest nothing

d)

Digest the organic matter

82.

Biochemical Oxygen Demand (BOD) may not be a good index for pollution for water bodies receiving effluents from:-

a)

Petroleum industry

b)

Sugar industry

c)

Domestic sewage

d)

Dairy industry

83.

State the function of cyclosporin A

a)

Removal of oil stains

b)

Removal of clots from blood vessels

c)

Lowering of blood cholesterol

d)

Immuno-suppressive agent

84.

In cheese manufacture, the micro-organisms are used for –

a)

the souring of milk only

b)

the ripening only

c)

development of resistance to spoilage

d)

Both a and b

85.

Trichoderma species are free living ‐------ that are very common in the root ecosystems.

a)

Algae

b)

Bacteria

c)

Virus

d)

Fungi

86.

------- and ------ bacteria can fix atmospheric nitrogen while free living in the soil.

a)

Lactobacillus

b)

Azospirillum and Azotobacter

c)

Streptococcus and staphylococcus

d)

Cyanobacteria and Nostoc

87.

Which role is played by lactic acid bacteria (LAB) in our stomach?

a)

Beneficial

b)

Harmful

c)

Neutral

d)

All of these

88.

improved water quality can be achieved by

a)

appropriate use of water

b)

careful water storage and handling

c)

proper land management

d)

all of the above

89.
What gas must be maintained at precise levels in the aeration tank?
a)
CO2
b)
O2
c)
H2
d)
CO
90.

What is effluent?

a)

the suspended solids in the water

b)

the partially treated wastewater moving through the facility

c)

the solids that come out of the digesters

d)

water-borne diseases

91.

Assertion (A): Besides curdling of milk, LAB also improves its nutritional quality by increasing vitamin B12

Reason(R): LAB, when present in human stomach, check disease causing microbes

a)

Both A and R are true and R is the correct explanation of A

b)

Both A and R are true But R is not correct explanation of A

c)

A is true, but R is false

d)

Both A and R are false

92.

Assertion (A): Biogas is used as fuel for cooking and lighting

Reason(R): It is considered as ecofriendly and pollution free source of energy

a)

Both A and R are true and R is the correct explanation of A

b)

Both A and R are true But R is not correct explanation of A

c)

A is true, but R is false

d)

Both A and R are false

93.

Assertion (A): Disadvantages of synthetic pesticides can be overcome by the use of natural or biopesticides

Reason(R): Biopesticides are harmless agents which are used to control weeds and pest without damage.

a)

Both A and R are true and R is the correct explanation of A

b)

Both A and R are true But R is not correct explanation of A

c)

A is true, but R is false

d)

Both A and R are false

94.

Assertion (A): Chemical pesticides are more hazardous as compared to biopesticides

Reason(R): Chemical pesticides are mostly non specific, hazardous and pollute the atmosphere.

a)

Both A and R are true and R is the correct explanation of A

b)

Both A and R are true But R is not correct explanation of A

c)

A is true, but R is false

d)

Both A and R are false

95.

Assertion (A): Leguminous plants are best preferred in rotation of crops

Reason(R): They have root nodules which have nitrogen fixing bacteria Clostridium.

a)

Both A and R are true and R is the correct explanation of A

b)

Both A and R are true But R is not correct explanation of A

c)

A is true, but R is false

d)

Both A and R are false

96.

Assertion (A): Use of fertilizers greatly enhance crop productivity

Reason(R): Irrigation is very important in increasing crop productivity.

a)

Both A and R are true and R is the correct explanation of A

b)

Both A and R are true But R is not correct explanation of A

c)

A is true, but R is false

d)

Both A and R are false

97.

What serves as the inoculum?

a)

Biogas

b)

Activated sludge

c)

Floc

d)

BOD

98.
Bacteria are beneficial to wastewater treatment because
a)
they naturally break down organic matter
b)
they help solid material to settle out of the wastewater
c)
the nutrients produced are beneficial to the treated water
d)
they aren't beneficial
99.

The main objectives of GAP are

a)

Control of non-point pollution from agricultural run off, human defecation, cattle wallowing and throwing of unburnt and half burnt bodies into the river

b)

To act as trend setter for taking up similar action plans in other grossly polluted stretches in other rivers

c)

Building new sewage treatment plants and expanding capacity of old ones and laying and rehabilitating sewers will be done to enhance the treatment capacity particularly in Delhi and Agra.

d)

Resource recovery options like production of methane for energy generation and use of aquaculture for revenue generation have been demonstrated.

100.

When was the Ganga Action Plan launched?

a)

Dec.1980

b)

Jan 1993

c)

Mar 1984

d)

Jan 1986

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