CHEMISTRY AT WORK

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Across
  1. 4. A type of lipid that forms cell membranes. (pg 57)
  2. 5. A weak bond between a hydrogen atom and an electronegative atom.(pg 41)
  3. 11. The sum of all chemical reactions in a living organism. (pg 35)
  4. 13. A bond formed by the transfer of electrons. (pg 42)
  5. 15. A small molecule involved in metabolism.(pg 58)
  6. 16. An atom with a net electric charge. (pg 24)
  7. 17. A substance that is dissolved in a solvent. (pg 44)
  8. 18. The process of making RNA from DNA.(pg 59)
  9. 19. A macromolecule made of amino acids. (pg 33)
  10. 21. The movement of water across a membrane. (pg 49)
  11. 22. A bond between amino acids in proteins.(pg 58)
  12. 23. A carbohydrate made of two sugar units.(pg 52)
  13. 27. A substance that conducts electricity when dissolved in water. (pg 51)
  14. 29. A neutral particle in an atom's nucleus. (pg 25)
  15. 30. A pure substance that cannot be broken down. (pg 26)
  16. 33. A homogeneous mixture of two or more substances.(pg 47)
  17. 34. The building blocks of proteins.(pg 35)
  18. 36. A substance with a pH less than 7. (pg 30)
  19. 38. A protein that speeds up chemical reactions. (pg 31)
  20. 43. A macromolecule that carries genetic information.(pg 55)
  21. 46. A substance with a pH greater than 7. (pg 30)
  22. 47. A bond formed by the sharing of electrons. (pg 33)
  23. 48. Ahe number of electrons in the outer shell of an atom. (pg 30)
  24. 49. The process of copying DNA. (pg 57)
Down
  1. 1. A large molecule composed of smaller subunits. (pg 56)
  2. 2. A type of lipid made of three fatty acids and glycerol.(pg 51)
  3. 3. A measure of acidity or alkalinity. (pg 30)
  4. 6. The genetic material in cells.(pg 34)
  5. 7. The basic unit of nucleic acids.(pg 33)
  6. 8. A force that holds atoms together. (pg 28)
  7. 9. The movement of particles from an area of high concentration to an area of low concentration.(pg 48)
  8. 10. A carbohydrate made of many sugar units. (pg 53)
  9. 12. A negatively charged particle in an atom. (pg 25)
  10. 14. The energy currency of the cell. (pg 32)
  11. 15. A carbohydrate made of a single sugar unit. (pg 55)
  12. 20. The process of synthesizing proteins from RNA.(pg 57)
  13. 24. The smallest unit of an element. (pg 22)
  14. 25. The process by which proteins lose their structure.(pg 57)
  15. 26. A positively charged particle in an atom.
  16. 28. A type of lipid that includes hormones.(pg 56)
  17. 31. A simple sugar that is an important energy source. (pg 33)
  18. 32. Atoms of the same element with different numbers of neutrons.(pg 41)
  19. 35. A substance that increases the rate of a chemical reaction without being consumed. (pg 29)
  20. 37. A nucleic acid involved in protein synthesis. (pg 40)
  21. 39. A group of atoms bonded together. (pg 22)
  22. 40. A solution that resists changes in pH. (pg 31)
  23. 41. A type of macromolecule that is hydrophobic. (pg 35)
  24. 42. A substance that dissolves another substance.( pg 47)
  25. 44. A macromolecule made of sugar units. (pg 37)
  26. 45. A substance formed from two or more elements. (pg 25)