General Bio 1 (Recommended)

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Across
  1. 3. ___ feedback in which an end product speeds up its own production.
  2. 5. ___ number that equals protons + neutrons.
  3. 7. pH is ____ times this up or down.
  4. 9. Goes from 7 to 14. Accepts H+ ions.
  5. 11. these bonds share electrons unequally. (H2O)
  6. 12. The building blocks of DNA
  7. 14. Non-living part of Ecosystem.
  8. 15. the heat to raise 1,000g of water 1 degree.
  9. 16. water loving.
  10. 20. The ___-hydrogen bond is non-polar covalent.
  11. 24. ___ is the mechanism of evolution
  12. 27. ___ hypothesis negates the original.
  13. 28. ___ bond is interaction of positively and negatively charged ions(Na+Cl-)
  14. 31. the calories in ___ is 1 kilocalorie.
  15. 33. ___ goes from 0 to 14.
  16. 34. ___ has DNA enclosed in a membrane bound organelle called a nucleus.
  17. 36. Different number of neutrons.
  18. 37. ___ has DNA in cytoplasm. No nucleus.
  19. 38. ___ bond attraction between a partial positive and a partial negative atom (2 H2O's)
  20. 41. water fearing.
  21. 44. ___ bond two atoms share electrons (H2O)
  22. 46. In a N-H bond, the ___ is negative.
  23. 47. ___ code is the same for all species.
  24. 48. ___published the Origin of the Species.
  25. 49. ___ element makes up 0.001% of the body.
Down
  1. 1. ___ electrons in 2nd orbital
  2. 2. Makes organic molecules with sunlight, CO2,H2O
  3. 4. Defined by the number of protons.
  4. 6. Digests organic molecules for energy.
  5. 8. ___ must be testable and falsifiable.
  6. 10. ___ selection is the selective breeding of desired characteristics
  7. 13. these bonds share electrons equally. (CH4)
  8. 17. In this bond atoms give up or acquire electrons to complete outer shell
  9. 18. ___ The letters of DNA building blocks.
  10. 19. ___ is the top four elements in human body by valence.
  11. 21. Goes from 7 to 0. Donates H+ ions.
  12. 22. Different number of electrons.
  13. 23. Substances that dissolve in solvents are ___. (Water and Salt)
  14. 25. ___ number equals the number protons.
  15. 26. ___ is the study of life.
  16. 29. the heat to raise 1g of water 1 degree.
  17. 30. ___ feedback in which the response reduces the initial stimulus
  18. 32. ___ is broad in scope, generates new hypothesis, supported by evidence.
  19. 33. Part of the atom that defines an element.
  20. 35. Electrons that gain energy move to the ___ shell.
  21. 39. this atom carries the partial negative charge in H2O
  22. 40. Living part of Ecosystem.
  23. 42. All species descended from one
  24. 43. Smallest unit of an element that retains the properties of the element.
  25. 45. ___ electrons in 1st orbital