Extremophiles — MCQs

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1. What are extremophiles?





2. Thermophiles are extremophiles that thrive in:





3. Which extremophiles survive in extremely salty conditions?





4. Acidophiles prefer environments with:





5. Psychrophiles are microorganisms that grow best in:





6. Barophiles are extremophiles that survive under:





7. Which extremophiles can withstand high levels of radiation?





8. Deinococcus radiodurans is famous for its ability to:





9. Xerophiles are adapted to survive in:





10. Which extremophiles produce methane as a metabolic byproduct?





11. Alkaliphiles thrive best in environments with:





12. Where are thermophiles often found?





13. Tardigrades are considered extremophiles because they can:





14. Which of the following is NOT an extremophile?





15. What is the scientific importance of extremophiles?





16. Organisms that thrive in acidic mine drainage are:





17. Which extremophile is important for PCR technology?





18. Haloarchaea are examples of:





19. Which extremophiles are often used in bioleaching of metals?





20. Which extremophile can survive complete desiccation?





21. Organisms that can tolerate more than one extreme condition are called:





22. Organisms living in hydrothermal vents are usually:





23. Which gas is mainly produced by methanogens?





24. Picrophilus torridus is an example of:





25. Which extremophile could help us understand the possibility of life on Europa (moon of Jupiter)?





26. Which extremophiles are useful in detergent enzymes?





27. The study of extremophiles is important in which field?





28. Sulfolobus is a genus of:





29. Which extremophile thrives in soda lakes?





30. Organisms that use chemical energy from inorganic molecules in extreme conditions are:





31. Which extremophile is important for understanding early Earth conditions?





32. Which type of extremophile is likely to exist on Mars due to salty soils?





33. Which extremophile can withstand vacuum and cosmic radiation?





34. Which extremophile plays a role in anaerobic digestion for biogas production?





35. Which is considered the “world’s toughest bacterium”?





36. Organisms that survive high UV radiation are:





37. Which extremophile is used in high-temperature DNA polymerase?





38. Organisms that require at least 20% salt concentration are:





39. Which extremophile grows best at temperatures above 80°C?





40. Which extremophiles are commonly studied for enzyme stability in industry?





41. Which extremophile is linked to early methane production on Earth?





42. Organisms that prefer environments above pH 9 are:





43. Which extremophile is mostly archaeal in nature?





44. Which environment would most likely support psychrophiles?





45. Pyrococcus furiosus is an example of:





46. Which extremophiles are best suited to survive on icy moons with subsurface oceans?





47. Which extremophiles can survive gamma radiation stronger than nuclear blasts?





48. Which extremophile is used in biotechnological production of thermostable enzymes?





49. Which extremophile thrives without oxygen (anaerobic)?





50. Extremophiles are important in the search for life on exoplanets because they:





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