Puzzle 3

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Across
  1. 6. the last name of the scientist who discovered cells
  2. 7. made of a double phospholipid layer
  3. 9. the SI unit for luminous intensity
  4. 10. planet with largest axial tilt and spins on its side
  5. 12. biggest moon of neptune
  6. 13. the number of sig figs in 10000
  7. 14. how close measured values are to one another
  8. 15. organelle that contains digestive enzymes
  9. 17. the SI unit for electrical current
  10. 18. the prefix for 10 to the negative 15th power
  11. 19. the passive transport of water
Down
  1. 1. cells that do not contain a nucleus
  2. 2. venus's atmosphere is mostly this gas
  3. 3. moon of saturn which contains ice
  4. 4. the number of sig figs in 4.001
  5. 5. second most abundant gas in the universe
  6. 8. the prefix for 10 to the 18th power
  7. 11. where ribosomes are made
  8. 16. largest volcano in the solar system
  9. 20. volcanically active moon