Astrobiology — MCQs

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1. Astrobiology is the study of:





2. Which planet is considered most similar to Earth in size and composition?





3. The term “habitable zone” refers to:





4. Which planet is often called the “Red Planet”?





5. Europa, a moon of Jupiter, is of interest to astrobiologists because it:





6. The search for extraterrestrial intelligence is abbreviated as:





7. Which gas is considered a potential biosignature in exoplanet atmospheres?





8. The Miller-Urey experiment demonstrated the:





9. Exoplanets are planets that:





10. Which telescope has been especially important in finding exoplanets?





11. Which extremophiles are studied to understand life in extreme environments?





12. The study of life’s origin on Earth is called:





13. Mars rovers are sent to search mainly for:





14. Which method is commonly used to detect exoplanets?





15. Titan, a moon of Saturn, is interesting because it has:





16. The Drake Equation estimates:





17. Which planet shows evidence of ancient river valleys and lakes?





18. Panspermia is the hypothesis that:





19. Which of the following is NOT a requirement for life as we know it?





20. The discovery of extremophiles supports the idea that:





21. Which gas on Mars is considered unusual because it might suggest biological activity?





22. Which star type has the longest lifespan and may host habitable planets?





23. Which Mars rover discovered evidence of ancient water?





24. Enceladus, a moon of Saturn, ejects plumes containing:





25. Which molecule is considered essential for genetic information storage?





26. A biosignature is:





27. Which field combines astronomy, biology, and geology?





28. The “Goldilocks zone” is another term for:





29. The Viking missions to Mars in the 1970s conducted experiments to detect:





30. The first confirmed exoplanet around a Sun-like star was discovered in:





31. Which molecule is believed to have been crucial in the origin of life due to its catalytic properties?





32. The Fermi Paradox deals with:





33. Which planetary body has geysers that eject material into space?





34. Which NASA mission is designed to study Europa?





35. Which type of star is least suitable for supporting life due to short lifespans?





36. Organic molecules in meteorites suggest:





37. Which element is considered the backbone of life’s molecules?





38. The study of Earth’s oldest microfossils helps in:





39. Which exoplanetary system is famous for having 7 Earth-sized planets?





40. Biosignatures detectable in exoplanet atmospheres include:





41. The “Great Filter” is a concept in:





42. The study of extremophiles on Earth is important because:





43. Life that does not rely on carbon but another element is called:





44. The James Webb Space Telescope is expected to:





45. A planet with too much greenhouse effect may resemble:





46. Which is the nearest potentially habitable exoplanet to Earth?





47. Which is considered a key solvent for life?





48. The term “exo-” in exoplanet means:





49. Which planet has the largest volcano in the Solar System, suggesting past geological activity?





50. The search for microbial life on other planets is mainly focused on:





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