Biology Practice: Economic Importance of Bacteria and Fungi (Mock Test 3 - Advanced)
1. Why is the "Antagonistic" relationship between Penicillium and certain bacteria medically significant?
2. Which biochemical process allows yeast to cause the "Rising" of dough in the bakery industry?
3. How do "Nitrifying Bacteria" like Nitrosomonas and Nitrobacter specifically benefit the soil ecosystem?
4. The "Symbiotic" nitrogen fixation by Rhizobium involves a chemical dialogue with the host plant to form:
5. Why are certain fungi like Aspergillus niger used in the large-scale production of Citric Acid?
6. What is the role of "Putrefying Bacteria" in the global Nitrogen Cycle?
7. Which of the following best describes the process of "Bioremediation" involving bacteria?
8. In "Pasteurization", why is the milk cooled rapidly after being heated to $62.8^\circ\text{C}$ for 30 minutes?
9. "Mushroom culture" requires a substrate like paddy straw. What is the primary biological reason for this?
10. The formation of "Vinegar" (Acetic Acid) from alcohol by Acetobacter is an example of:
11. Why is Streptomyces classified as an important genus in the pharmaceutical industry?
12. The "Denitrifying Bacteria" like Pseudomonas aeruginosa act as a 'Leak' in the nitrogen cycle because they:
13. In the production of "Vitamin B12", which microorganism is commonly employed?
14. What makes "Ergot" (derived from Claviceps) a double-edged sword in economic importance?
15. "Aflatoxins" produced by Aspergillus flavus are primarily a concern in the storage of:
16. The characteristic 'tangy' flavor and 'holes' in certain types of cheese are determined by:
17. Which of the following describes "Free-living" nitrogen fixation?
18. Why is "Single Cell Protein" (SCP) considered a solution to global protein deficiency?
19. In "Retting" of flax, the bacteria specifically act on the ______ to release the fibers.
20. What is the role of E. coli in the human large intestine?
