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Environmental Microbiology MCQs

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1. : Environmental microbiology is the study of:





2. : The first person to observe microorganisms using a microscope was:





3. : Which microorganism is mainly responsible for nitrogen fixation?





4. : Cyanobacteria are also known as:





5. : Mycorrhizal fungi help plants mainly by improving:





6. : Which of the following is a bioindicator of water pollution?





7. : The microbial process of converting nitrates into nitrogen gas is called:





8. : The ability of microbes to degrade environmental pollutants is called:





9. : Oil spills are often cleaned using:





10. : Which microorganism is commonly used in sewage treatment?





11. : The first antibiotic discovered, penicillin, is produced by:





12. : Microbes that grow at high temperatures (above 60°C) are called:





13. : Bacteria that can use oxygen if available but also grow without it are:





14. : Which microorganisms are used in the production of biofertilizers?





15. : The microbial production of methane in anaerobic conditions is called:





16. : Which bacteria are used in the production of vinegar (acetic acid)?





17. : The main role of decomposer microorganisms in ecosystems is:





18. : Biofilm formation on surfaces is mainly due to:





19. : In the sulfur cycle, the bacteria responsible for oxidizing hydrogen sulfide to sulfur are:





20. : Which microorganism is commonly used for ethanol production?





21. : The process of using genetically engineered microbes to clean pollutants is called:





22. : Lichens represent a symbiotic association between:





23. : Acid mine drainage is mainly caused by the activity of:





24. : Which gas is produced by methanogenic archaea in wetlands and landfills?





25. : The study of microorganisms in extreme environments like hot springs and deep-sea vents is called:





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