Unit 2 vocabulary

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Across
  1. 3. a substance that can neutralize the acid by reacting with hydrogen ions.
  2. 4. complex molecules and do most of the work in cells.
  3. 10. The substances which participate in a chemical reaction
  4. 11. A molecule that is the basic building block of the nucleic acids DNA and RNA.
  5. 14. atoms or small molecules that bond together to form more complex structures such as polymers
  6. 15. the molecule that carries genetic information for the development and functioning of an organism (DNA)
  7. 18. a biological catalyst that is usually a protein but could be RNA.
  8. 20. molecules that combine to form proteins.
  9. 21. any of a class of natural or synthetic substances composed of very large molecules, called macromolecules, which are multiples of simpler chemical units called monomers.
  10. 22. naturally occurring chemical compounds that serve as the main information-carrying molecules of the cell.
Down
  1. 1. a process in which one or more substances, also called reactants, are converted to one or more different substances, known as products.
  2. 2. an organic compound such as sugar or starch, and is used to store energy.
  3. 3. a solution that resists changes in pH
  4. 5. any of a large class of chemical compounds in which one or more atoms of carbon are covalently linked to atoms of other elements, most commonly hydrogen, oxygen, or nitrogen.
  5. 6. the surface on which an organism (such as a plant, fungus, or animal) lives.
  6. 7. end substances after a biological process has occurred.
  7. 8. the simplest forms of sugar and the most basic units (monomers) from which all carbohydrates are built.
  8. 9. a chemical bond formed between two molecules when the carboxyl group of one molecule reacts with the amino group of the other molecule, releasing a molecule of water (H2O).
  9. 12. long chains of carbohydrate molecules, composed of several smaller monosaccharides.
  10. 13. A chemical that gives off hydrogen ions in water and forms salts by combining with certain metals.
  11. 16. a substance that speeds up a chemical reaction, or lowers the temperature or pressure needed to start one, without itself being consumed during the reaction.
  12. 17. the amount of energy required to reach the transition state.
  13. 19. a substance that does not contain both carbon and hydrogen.
  14. 23. fatty compounds that perform a variety of functions in your body.