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