NEET NCERT Microbes Human welfare,Biology onlime mock,sample tests

Microbes in Human Welfare Mock Test-10

Question No:1

Ethanol is commercially produced through a particular species of

[A] Clostridium
[B] Trichoderma
[C] Aspergillus
[D] Saccharomyces

Question No:2

In gobar gas, the maximum amount is that of:

[A] Methane
[B] Propane
[C] Carbon dioxide
[D] Butane

Question No:3

Read the following four statements (A-D):
(A) Colostrum is recommended for the new born because it is rich in antigen
(B) Chikungunya is caused by a Gram negative bacterium
(C) Tissue culture has proved useful in obtaining virus-free plants
(D) Beer is manufactured by distillation of fermented grape juice
How many of the above statements are wrong

[A] Three
[B] Four
[C] One
[D] Two

Question No:4

The domestic sewage in large cities:

[A] Is processed by aerobic and then anaerobic bacteria in the secondary treatment in Sewage Treatment Plant (STPs)
[B] When treated in STPs does not really require the aeration step as the sewage contains adequate oxygen
[C] Has very high amounts of suspended solids and dissolved salts
[D] Has a high BOD as it contains both aerobic and anaerobic bacteria.

Question No:5

Monascus purpureus is 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

Question No:6

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

[A] Penicillin
[B] Streptokinase
[C] Cyclosporin-A
[D] Statins

Question No:7

Which of the following microbes forms symbiotic association with plants and helps them in their nutrition?

[A] Azotobacter
[B] Aspergillus
[C] Glomus
[D] Trichoderma

Question No:8

Yeast used on the production of:

[A] Citric acid and lactic acid
[B] Lipase and pectinase
[C] Bread and beer
[D] Cheese and butter

Question No:9

A nitrogen-fixing microbe associated with Azolla in rice field is:

[A] Spirulina
[B] Anabaena
[C] Frankia
[D] Tolypothrix

Question No:10

Which one of the following is an example of carrying out biological control of pests / diseases using microbes?

[A] Trichoderma sp.Against certain plant pathogens
[B] Nucleopolyhedorvirus against white rust in Brassica
[C] Bt-cotton to increase cotton yield
[D] Lady bird beetal against aphids in mustard

Question No:11

A good producer of citric acid is:

[A] Aspergillus
[B] Pseudomonas
[C] Clostridium
[D] Saccharomyces

Question No:12

Which of the following are likely to be present deep sea water?

[A] Archaebacteria
[B] Eubacteria
[C] Blue-green algae
[D] Saprophytic fungi

Question No:13

During sewage treatment, biogases are produced which include:

[A] Methane, hydrogensulphide, carbon dioxide
[B] Methane, oxygen, hydrogensulphide
[C] Hydrogensulphide, methane, sulphur dioxide
[D] Hydrogensulphide, nitrogen, methane

Question No:14

What gases are produced in anaerobic sludge digesters?

[A] Methane and CO2only
[B] Methane, Hydrogen Sulphide and CO2
[C] Methane, Hydrogen Sulphide and O2
[D] Hydrogen Sulphide and CO2

Question No:15

High value of BOD (Biochemical Oxygen Demand) indicates that:

[A] Water is pure
[B] Water is highly polluted
[C] Water is less polluted
[D] Consumption of organic matter in the water is higher by the microbes

Question No:16

Match the following list of microbes and their importance:
(a) sacharomyces cerevisiae— 1)production of immunosuppressive agents
(b) monoscus purpureus—- 2)ripening of Swiss cheese
(c) Trichoderma polysporurn —–3)Commercial production of ethanol
(d) Propionibacterium sharmanii——— 4)Production of blood-cholesterol lowering agnets
(a) (b) (c) (d)

[A] (iv) (iii) (ii) (i)
[B] (iv) (ii) (i) (iii)
[C] (iii) (i) (iv) (ii)
[D] (iii) (iv) (i) (ii)