Global MCQ Practice

🌐 Total MCQ
🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books

Class 12 Biology Chapter 10 Microbes In Human Welfare Quiz 6 (25 MCQs)

Quiz Instructions

Select an option to see the correct answer instantly.

1. Which of these is an example of an antibiotic?
2. Large holes in Swiss cheese are due to:
3. A good producer of citric acid is (a) Clostridium (b) Saccharomyces (c) Aspergillus (d) Pseudomonas
4. Cyclosporin A is used as an immunosuppressive agent in organ-transplant patients. It is produced by:
5. Roquefort cheese is ripened by growing a specific ..... on them, which gives them a particular flavour.
6. Monarchs purpureus is a yeast used commercially in the production of
7. The technology of biogas production was developed in India mainly due to the efforts of:
8. Biofertilizers are ..... that enrich the nutrient quality of the soil.
9. Large holes in Swiss cheese are formed due to production of a large amount of CO$_{2}$ by
10. The use of chemical fertilizers to meet the ever-increasing demand of agricultural produce has contributed significantly to:
11. The word "antibiotic" means
12. The bioactive molecule Cyclosporin-A is used in-
13. The bio-active molecule cyclosporin A is used in-
14. The enzyme that converts glucose into alcohol, is
15. Biogas contains-
16. Monascus purpureus is a yeast used commercially in the production of
17. Antibiotics are chemical substances that kill bacterial cells by interrupting a key cellular function
18. A beetle with red and black markings, known as the Ladybird, is useful in controlling:
19. According to the organic farmer, the eradication of the creatures that are often described as pests is:
20. A key belief of the organic farmer regarding biodiversity is:
21. Blue green algae (Cyanobacteria) also add ..... to the soil and increase its fertility.
22. Which of the following is produced by a microbe but is NOT an enzyme?
23. Selman Waksman used the term antibiotic in
24. The nutritive media for growing bacteria and other microorganisms in the laboratory is called-
25. Penicillin is an example of a painkiller
🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books