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