Chapter 6: The Building Blocks of Life

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Across
  1. 4. The measure of concentration of H+ in a solution
  2. 7. substances that release hydroxide ions (OH–) when dissolved in water
  3. 9. hydrophobic molecules made mostly of carbon and hydrogen
  4. 10. positively charged particles
  5. 15. a compound made of small carbon compounds called amino acids
  6. 17. negatively charged particles that are located outside the nucleus
  7. 18. energy the minimum amount of energy needed for reactants to form products in a chemical reaction.
  8. 20. large molecules formed by joining smaller organic molecules together.
  9. 24. acids complex macromolecules that store and transmit genetic information.
  10. 27. atoms of the same element that have the same number of protons and electrons but have a different number of neutrons
  11. 28. particles that have no charge
  12. 30. site the specific location where a substrate binds on an enzyme
  13. 31. compounds composed of carbon, hydrogen, and oxygen in a ratio of one oxygen and two hydrogen atoms for each carbon atom
  14. 32. a compound in which the atoms are held
  15. 33. a pure substance that cannot be broken down into other substances by physical or chemical means.
  16. 34. substances that release hydrogen ions (H+) when dissolved in water
  17. 35. the building blocks of matter
  18. 36. molecules made from repeating units of identical or nearly identical compounds linked together by a series of covalent bonds.
  19. 37. mixture a mixture that has a uniform composition throughout
  20. 38. bonds electrical attraction between two oppositely charged atoms or groups of atoms
Down
  1. 1. mixtures that can react with acids or bases to keep the pH within a particular range.
  2. 2. the substance that is dissolved in the solvent.
  3. 3. molecules molecules that have an unequal distribution of charges are called
  4. 5. bond a weak interaction involving a hydrogen atom and a fluorine, oxygen, or nitrogen atom.
  5. 6. a substance in which another substance is dissolved.
  6. 8. reaction releases energy in the form of heat.
  7. 11. reactants that bind to the enzyme are called
  8. 12. acids small compounds that are made of carbon, nitrogen, oxygen, hydrogen, and sometimes sulfur.
  9. 13. reaction the process by which atoms or groups of atoms in substances are mixed and reorganized into different substances.
  10. 14. mixture mixture where the components remain distinct.
  11. 16. an atom that has lost or gained one or more electrons and carries an electric charge
  12. 19. smaller repeating subunits that make up nucleic acid composed of carbon, nitrogen, oxygen, phosphorus, and hydrogen atoms.
  13. 21. reaction absorbs heat energy
  14. 22. the substances formed during the reaction, on the right side of the arrow.
  15. 23. bonds Chemical bond that forms when electrons are shared
  16. 25. the starting substances, on the left side of the arrow.
  17. 26. a substance that lowers the activation energy needed to start a chemical reaction.
  18. 29. by covalent bonds.
  19. 31. a pure substance formed when two or more different elements combine
  20. 33. biological catalyst