Microbes in Human Welfare Test

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Microbes in Human Welfare Test - 44

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Weekly Quiz Competition

Question 1
1 / -0

Identify two correct statements from the following.
(i) Rennin is industrially produced by Mucor pusilus
(ii) Streptokinase is industrially produced by Pseudomonas pudica
(iii) Alkaline serine protease is produced by Bacillus licheniformis
(iv) DNA polymerase is produced by Trichoderma reesi.

A
i and ii

B
i and iii

C
ii and iii

D
ii and iv

Solution

Streptokinase is produced by Streptococcus.
DNA polymerase is produced by bacteria.
Correct answer-B
Question 2
1 / -0

'Flocs' is?

A
Primary sludge produced in sewage treatment

B
A type of biofortified food

C
A mesh like structure formed by association of bacteria and fungal filaments in sewage treatment

D
The effluent in primary treatment tank obtained during sewage treatment
Solution
Correct Option: C
Explanation:
Microbes are utilized in sewage treatment to break down complex organic matter into simpler organic matter in sewage water.
Bacterial cells and fungal filaments are mixed and linked to produce a mesh or network-like structure.
These organisms help to reduce the BOD (Biological oxygen demand) of sewage water by reducing organic materials.
Hence, flocs are a mesh-like structure formed by the association of bacteria and fungal filaments in sewage treatment.
Question 3
1 / -0

Microorganism used for commercial production of acetic acid is?

A
Saccharomyces cerevisiae

B
Acetobacter

C
Aspergillus niger

D
Clostridium butylicum

Solution

Acetobacter aceti is used for commercial production of acetic acid.
Correct answer-B
Question 4
1 / -0

Match the columns and choose the appropriate option.

I II
(a) Citric acid (p) Methanobacterium
(b) Cyclosporin A (q) Monascus purpureus
(c) Statin (r) Aspergills niger
(d) Gobar gas (s) Trichoderma polysponum
(t) Clostridium butylicum

A
a-r, b-s, c-q, d-p

B
a-t, b-q, c-s, d-r

C
a-q, b-s, c-t, d-r

D
a-r, b-s, c-q, d-t

Solution

Citric acid is produced bu Aspergillus niger.
Cyclosporin A is produced by Trichoderma polysporum.
Statin is produced by Monascus purpureus.
Gobar gas is made by methanogen Methanobacterium.
Correct answer-A
Question 5
1 / -0

Identify the set which has all organisms used in biological control of pests.

A
Trichoderma, Nucleopolyhedro virus, Bacillus thuringiensis, Lady Bird (Lady Bug) beetle

B
Dragon flies, Bacillus thuringiensis, Lady Bird, Aphids

C
Lady Birds, Penicillium, Baculovirus, Aspergillus

D
Trichoderma, Aspergillus, Bacillus thuringiensis, Nucleopolyhedro virus

Solution

Trichoderma,Nucleopolyhedro virus,Bacillus thuringiensis,Lady Bird beetle are all used as biopesticides.
Correct answer-A
Question 6
1 / -0

The primary treatment of sewage water involves.

A
Sludge digestion

B
Aerobic bacterial activity

C
Anaerobic bacterial activity

D
Filtration and sedimentation
Question 7
1 / -0

Identify the correct sequence of steps involved in the treatment of sewage.
(i) Growth of aerobic microbes to reduce BOD
(ii) Sequential filtration for removing floating debris
(iii) Production of inflammable gas
(iv) Growth of anaerobic microbes for digestion of bacteria

A
i, iv, ii, iii

B
ii, iv, i, iii

C
ii, i, iv, iii

D
iv, ii, iii, i
Question 8
1 / -0

Vitamin $$B_{12}$$ is obtained from.

A
Propionibacteria

B
Ashbya gossypii

C
Bacillus subtilis

D
Saccharomyces cerevisiae
Question 9
1 / -0

Identify the correct pair of characters of a bacterium which is used in the production of methane.
(i) Recyclers of inorganic nutrients
(ii) Present in stomach of cattle
(iii) Obtain energy from sunlight
(iv) Aerobes

A
ii, iii

B
i, ii

C
i, iv

D
iii, iv
Question 10
1 / -0

Cyclosporin A, used as immunosuppressive agent in organ transplants is produced by.

A
Trichoderma

B
Monascus

C
Streptococcus

D
Staphylococcus

Solution

Answer is option A i.e. "Trichoderma"
Cyclosporin A is one of the mostly used drugs that are easily produced from a biological organism such as fungi. Cyclosporin A is produced by fermentation of aerobic fungi called as Trichoderma.

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	I		II
(a)	Citric acid	(p)	Methanobacterium
(b)	Cyclosporin A	(q)	Monascus purpureus
(c)	Statin	(r)	Aspergills niger
(d)	Gobar gas	(s)	Trichoderma polysponum
		(t)	Clostridium butylicum

Microbes in Human Welfare Test - 44

Result

Microbes in Human Welfare Test - 44

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SHARING IS CARING

Question 1

i and ii

i and iii

ii and iii

ii and iv

Solution

Question 2

Primary sludge produced in sewage treatment

A type of biofortified food

A mesh like structure formed by association of bacteria and fungal filaments in sewage treatment

The effluent in primary treatment tank obtained during sewage treatment

Solution

Question 3

Saccharomyces cerevisiae

Acetobacter

Aspergillus niger

Clostridium butylicum

Solution

Question 4

a-r, b-s, c-q, d-p

a-t, b-q, c-s, d-r

a-q, b-s, c-t, d-r

a-r, b-s, c-q, d-t

Solution

Question 5

Trichoderma, Nucleopolyhedro virus, Bacillus thuringiensis, Lady Bird (Lady Bug) beetle

Dragon flies, Bacillus thuringiensis, Lady Bird, Aphids

Lady Birds, Penicillium, Baculovirus, Aspergillus

Trichoderma, Aspergillus, Bacillus thuringiensis, Nucleopolyhedro virus

Solution

Question 6

Sludge digestion

Aerobic bacterial activity

Anaerobic bacterial activity

Filtration and sedimentation

Question 7

i, iv, ii, iii

ii, iv, i, iii

ii, i, iv, iii

iv, ii, iii, i

Question 8

Propionibacteria

Ashbya gossypii

Bacillus subtilis

Saccharomyces cerevisiae

Question 9

ii, iii

i, ii

i, iv

iii, iv

Question 10

Trichoderma

Monascus

Streptococcus

Staphylococcus

Solution

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