EAPS 395, Exam I

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Across
  1. 2. a form of kinetic energy used by life
  2. 5. have branched chain fatty acids
  3. 6. used by all Earth life
  4. 11. same number of protons but not neutrons
  5. 12. type of rock deposited in sequential layers
  6. 13. made of amino acids
  7. 14. were depleted in iron before the rise of oxygen
  8. 15. not alive, according to NASA's definition
  9. 18. membrane components of eukaryotes
  10. 21. introduce new traits to populations
  11. 24. heaviest element typically produced in stars
  12. 25. chemical reaction in which electrons are lost
  13. 26. durable grains that can help us reconstruct earth history
  14. 30. resulted in the Earth's internal layering
  15. 31. type of reproduction involving binary fission
  16. 32. component of nucleic acids
  17. 33. outside of some cells
  18. 36. cyanobacterial metabolism
  19. 37. enzyme that breaks the N triple bond
  20. 38. unlikely to have unsaturated fatty acids
  21. 39. not-so-hellish period of Earth's history?
  22. 40. can form diverse minerals with oxygen
  23. 41. a mineral that readily reacts with oxygen to produce acid
Down
  1. 1. live in rocks
  2. 3. metabolic breakdown of molecules, releasing energy
  3. 4. the product of H burning in stars
  4. 7. cyanobacteria cells that fix N instead of C
  5. 8. a heterotrophic metabolism
  6. 9. drove an explosion of biodiversity
  7. 10. the rise of oxygen
  8. 16. may have high intracellular glucose levels
  9. 17. elements of life
  10. 19. using only a specific enantiomer
  11. 20. reduction of NO3 to N2
  12. 22. animal that can enter suspended animation
  13. 23. lowers freezing temperature
  14. 25. a requirement for complex life
  15. 27. transfer of life between celestial bodies
  16. 28. the compartment of life
  17. 29. energy storage molecules
  18. 34. component of membranes, nucleic acids, and ATP
  19. 35. single-stranded nucleic acid