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Class 8 Science Chapter 2 Microorganisms Friend And Foe Quiz 3 (52 MCQs)

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1. Consumption of food spoiled by some micro-organisms causes .....
2. Name the First Antibiotic discovered?
3. Which of the following is a common antibiotic?
4. The ammonia is converted to nitrates by .....
5. Which of these would be considered a decomposer?
6. Anthrax is a dangerous disease caused by bacteria
7. Which of the following bruises help to keep nitrogen in the atmosphere for the balance of nitrogen? Which of The Following Microorganism Picrowing Microorganism An Important Role In the ATMOSPEree?
8. Which bacteria helps in settling of curd?
9. Which of the following liquids is added to preserve food?
10. What process is when a week is placed for a week in the grape juice? What process is for a week? What process teakes Place Wen Yeast is Added To Grape and Left For A Week?
11. Plant viruses are
12. How do antibiotics affect beneficial bacteria in the body?
13. The process in which microorganism like lactobacillus convert lactose(sugar present in milk) into lactic acid is called:
14. What is a common method of food preservation?
15. The Fermentation process is discovered by
16. ..... is a dangerous human and cattle disease caused by bacterium
17. Which group of panicopus and peniculium adulthood? Rhizopus and penicillium belongs to which Group of Microorganisms?
18. How do microorganisms contribute to cleaning the environment?
19. What is the main function of vaccines?
20. Female Aedes mosquito helps in the carriage of .....
21. Examples of Multicellular Microorganism are
22. Which microorganism is used in the production of bread?
23. Vegetables fruits fish meat are preserved by
24. The bread or idli dough rises because of
25. Citrus canker can be seen on
26. Some bacteria are able to fix nitrogen from the atmosphere to enrich soil with nitrogen and increase its fertility.These microbes are called
27. Tell another name for pathogens
28. Who discovered penicillin drug
29. Which are the simplest living organisms on the earth?
30. Any one chemical treatment
31. What happens to food when it is spoiled by microorganisms?
32. Atttered the name of the person who saw a single living beings and explained.
33. Curd sets fastest in .....
34. Can microorganisms exist freely?
35. The first virus research took place in 1935.What was the name of this virus? First Virus Wars Discovered In 1935. What wat W. Virus?
36. Viruses are wrapped in which coat?
37. Disease causing microorganisms are called
38. What is the process called when sugar is converted into alcohol?
39. The process of conversion on sugar into alcohol is known as
40. When did Edward Jenner discovered vaccine for SMALL POX
41. Who discovered Bacillus Anthracis
42. Antibiotics are useful against diseases caused by viruses
43. What are the scientists who study microorganisms called?
44. Who Discovered Small Pox Vaccine?
45. The process of conversion of sugar into alcohol by yeast is called
46. The microbe for Malaria is carried by
47. Which of the following is a method of food preservation?
48. Diseases like polio and chicken pox are caused by .....
49. All viruses are parasitic in nature
50. A common preservative used in jam and pickles is
51. Microorganisms can be seen with the help of
52. The rod-shaped bacteria are called
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