Microbes in Human Welfare

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Microbes in Human Welfare - 02

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Mrs. Surabhi Mukherjee, (M.Sc., Biotechnology, B.Ed., gurucoolclasseslko@gmail.com)

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Q1. Why is wine distilled? *

1 point

To increase the alcohol percentage

To prevent spoilage

To reduce toxicity

To enable fermentation

Q2. Which of the following is used as a substrate for alcohol fermentation? *

1 point

Sucrose

Barley

Maize

None of them

Q3. Antibiotics are the most effective on *

1 point

None of them

Bacteria

Fungi

Virus

Q4. ___________ is a pigment that gives a pinkish hue to rhizobium induced root nodules. *

1 point

None of the above

Leghaemoglobin

Mauveine

Carotenoid

Q5. Bacillus thuringiensis is widely used as *

1 point

None of them

Rodenticide

Insecticide

Weedicides

Q6. In Swiss cheese, big holes are made by a *

1 point

machine

bacterium producing large quantities of carbon dioxide

fungus releasing a lot of gases while its metabolic activities

bacterium producing methane gas

Q7. During which stage of the purification of the sewage water are microbes used? *

1 point

Primary treatment

Secondary treatment

Both Primary and Secondary Treatment

Tertiary treatment

Q8. What does a high value of BOD(Biochemical Oxygen Demand) indicate? *

1 point

that water is less polluted

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

That water is pure

that water is highly polluted

Q9. This is a good producer of citric acid *

1 point

Pseudomonas

Clostridium

Saccharomyces

Aspergillus

Q10. This is not an example of performing biological control of diseases/pests using microbes *

1 point

Bt-cotton to increase yield

Trichoderma sp. against some plant pathogens

Nucleopolyhedrovirus against insects and other arthropods

Ladybird beetle against aphids

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