eVidyarthi

MCQ Science and Technology Class 9 Chapter 8 Maharashtra Board

Useful and Harmful Microbes

1. What gas accumulates in the balloon during the Yeast fermentation activity?

Question 1 of 20

2. What causes bread dough to rise during Yeast fermentation?

Question 2 of 20

3. Which Yeast species ferments molasses in sugar factories?

Question 3 of 20

4. What is the primary product of molasses fermentation by Yeast?

Question 4 of 20

5. Which Yeast absorbs toxins during palm oil production?

Question 5 of 20

6. Which bacterium cleans oil spills in oceans?

Question 6 of 20

7. What are carbon compounds from microbes that destroy harmful organisms called?

Question 7 of 20

8. Which antibiotic is derived from the fungus Penicillium?

Question 8 of 20

9. Which bacteria does Penicillin target in infections?

Question 9 of 20

10. Who accidentally discovered Penicillin in 1928?

Question 10 of 20

11. What type of antibiotic is used when the pathogen is unidentified but symptoms are visible?

Question 11 of 20

12. Which is an example of a narrow-spectrum antibiotic?

Question 12 of 20

13. Which Pune institute researches diseases like fever and lung diseases?

Question 13 of 20

14. What happens to leather items when fungal spores germinate on them?

Question 14 of 20

15. What do fungi release into pickles that makes them unsafe to eat?

Question 15 of 20

16. Which bacteria cause food poisoning by spoiling cooked food?

Question 16 of 20

17. What is a characteristic of Clostridium bacteria?

Question 17 of 20

18. Which Clostridium species causes food poisoning, as identified by Van Ermengem?

Question 18 of 20

19. Who researched the toxin causing gas gangrene?

Question 19 of 20

20. What award was Ida Bengston given in 1947 for her typhus research?

Question 20 of 20

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