Chapter 2 Crossword (Includes terms from Chapter 1)

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Across
  1. 1. Negatively charged particle.
  2. 3. Energy needed to start a chemical reaction.
  3. 7. Smallest unit of a compound.
  4. 8. Large macromolecule formed from monosaccharides.
  5. 13. Process in which a cell from two parents unite to create a new organism.
  6. 14. Macromolecule containing carbon, hydrogen, oxygen, nitrogen, and phosphorus.
  7. 16. A weak acid or base that helps prevent sharp, sudden changes in pH.
  8. 18. Protein that acts as a biological catalyst.
  9. 20. A large compound formed from combinations of many monomers.
  10. 21. Monomer of nucleic acids. Composed of a 5-carbon sugar, nitrogenous base, and a phosphate group.
  11. 22. Set of chemical reactions through which an organism builds up or breaks down materials as it carries out its life processes.
  12. 24. Macromolecule made up of carbon and hydrogen. Fats, oils, and waxes.
  13. 25. A substance combined of two or more elements.
  14. 26. A substance that speeds up the rate of a chemical reaction.
  15. 27. Basic unit of matter.
  16. 28. An element or compound that is produced by a chemical reaction.
  17. 32. A bond formed when electrons are transferred.
  18. 33. Compound that produces hydroxide ions in solution.
  19. 34. An atom that has a charge.
  20. 35. An element or compound that enters into a chemical reaction.
Down
  1. 1. Change over time.
  2. 2. System used to indicate the concentration of hydrogen ions
  3. 4. Process by which organisms maintain a stable internal environment.
  4. 5. A signal in which an organism responds.
  5. 6. Double-stranded nucleic that contains the sugar deoxyribose.
  6. 9. Substance consisting of one type of atom.
  7. 10. Macromolecule that is made up of carbon, hydrogen, oxygen, and nitrogen.
  8. 11. Reactant of an enzyme-catalyzed reaction.
  9. 12. Process where a single parent reproduces by itself.
  10. 15. Compound made up of carbon, hydrogen, and oxygen. Major source of energy for living organisms.
  11. 17. Single-stranded nucleic acid that contains the sugar ribose.
  12. 19. Single sugar molecule
  13. 21. Center of the atom that contains the neutrons and protons.
  14. 23. Monomer of proteins. Compound of amino group, carboxyl group, and an R-group.
  15. 29. Compound that forms hydrogen ions in a solution.
  16. 30. A bond formed when electrons are shared.
  17. 31. Small unit that can join together with other small units to form polymers.