MICROORGANISMS: FRIEND AND FOE 1. Why microorganisms are called so? 2. What are the major groups of microorganisms? 3.Name a microbe which can be seen with a magnifying glass. 4. How do virus different from other microorganisms? 5.Name some disease caused by virus. 6.Where do microorganisms live? 7.Name the bacterium which promotes the formation of curd. 8.What is Biotechnology? 9.What are antibiotics? 10. How do antibodies protect our body? 11. What is pasteurization? What is the purpose of doing it? 12. Why are blue-green algae used as fertilizers? 13. What do yeast produce during fermentation process? 14. Why antibiotics have no effect on viruses? 15.Name two nitrogen fixing algae. 16.What will happen if yeast is not added to the maida flour for making bread? 17.Name some food substances contain natural sugars. 18. What are the two groups of organisms of fungi? 19. What are carriers of disease? 20.What will happen if water gets collected anywhere in the neighborhood? 21. Why are children/infants given vaccination? 22.What will happen if spoilt food is consumed? 23.During pasteurization the boiled milk is suddenly chilled and stored. Why?
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