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MICROBES IN HUMAN WELFARE
Study Material
MICROBES IN HUMAN WELFARE
Very Short Answer Questions
Q1. Why does 'Swiss cheese' have big holes. Name the bacteria responsible for it.
Q3. Name a microbe used for statin production. How do statins lower blood cholesterol level?
Q4. Why do we prefer to call secondary waste water treatment as biological treatment?
Q5. What is Nucleopolyhedrovirus is being used for now a days?
Q6. Write the most important characteristic that Aspergillus niger, Clostridium butylicum and Lactobacillus share.
Q7. Name any two genetically modified crops.
Q8. Name any two industrially important enzymes.
Q9. Name an immunosuppressive agent. From where it is obtained?
Q10. What is the group of bacteria found in both the rumen of cattle and sludge of sewage treatment?
Q11. Name the scientists who were credited for showing the role of penicillin as an antibiotic.
Q1. How do mycorrhizal fungi help the plants harbouring them?
Q2. What is the chemical nature of biogas? Explain the process of biogas production.
Q3. What are biofertilizers? Write a brief note on them.
Q1. Write brief essay on microbes in sewage treatments?
Q1. Bacteria cannot be seen with the naked eye, but these can be seen with the help of a microscope. If you have to carry a sample from your home to your biology laboratory to demonstrate the presence of microbes under a microscope, which sample would you carry and why?
Q2. Give examples to prove that microbes release gases during metabolism.
Q3. Name the states involved in Ganga action plan.
Q4. Name some traditional Indian foods made of wheat, rice and Bengal gram (or their products). Which of these foods involve the use of microbes?
Q5. In which way have microbes played a major role in controlling diseases caused by harmful bacteria?
Q6. Do you think microbes can also be used as a source of energy? If yes. how?
Q7. Microbes can be used to decrease the use of chemical fertilisers and pesticides. Explain how this can be accomplished.
Q8. Three water samples namely river water, untreated sewage water and secondary effluent discharged from a sewage treatment plant were subjected to BOD test. The samples were labelled A, B and C; but the laboratory attendant did not note which was which. The BOD values of the three samples A. B and C were recorded as 20mg/L, 8mg/L and 400mg/L, respectively. Which sample of the water is most polluted? Can you assign the correct label to each assuming the river water is relatively clean?
Q9. Name of the microbes from which Cyclosporin A (an Immunosuppressive drug) and Statins (blood cholesterol lowering agents) are obtained.
Q10. Find out the role of microbes in the following and discuss it with your teacher. (a) Single cell protein (SCP) (b) Soil
Q11. Arrange the following in the decreasing order (most important first) of their importance, for the welfare of human society. Give reasons for your answer. Biogas, Citric acid, Penicillin and Curd.
Q12. What is sewage? In which way can sewage be harmful to us?
Q13. What is the key difference between primary and secondary sewage treatment?