Biology

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Across
  1. 4. compound: A covalently bonded compound containing the element carbon.
  2. 6. and cellulose.
  3. 8. A substance that changes the rate of a chemical reaction but is not itself used up or affected by the reaction.
  4. 11. The substances formed during a chemical reaction, usually indicated on the right­hand side of a chemical equation.
  5. 13. acid: A class of organic compounds that serve as the building blocks of proteins.
  6. 17. The tendency of energy to disperse and become less available to do work.
  7. 19. A pure substance made from two or more chemically combined elements.
  8. 20. The process by which particles in solution are evenly distributed throughout the solvent by Brownian motion.
  9. 21. An organic compound comprised of carbon, hydrogen, and oxygen elements, including sugars, starch, and cellulose.
  10. 22. having a negative charge while others are positive.
  11. 24. enzyme catalyzes.
  12. 26. An organic compound comprised of the elements carbon, hydrogen, and oxygen; including sugars,
  13. 28. A class of organic compounds that serve as the building blocks for the information storage molecules DNA and RNA.
  14. 29. The smallest particle of a covalently bonded compound.
Down
  1. 1. The process by which one substance, the solute, is broken up into smaller pieces by and distributed within a second substance, the solvent.
  2. 2. A pure substance made of only one kind of atom
  3. 3. A substance that is present before a chemical reaction and takes part in it, usually shown on the left-hand side of a chemical equation.
  4. 5. change: A change in a substance that results in one or more new substances being formed that have different physical and chemical properties than those of the original substance.
  5. 7. The attraction between like particles within polar substances.
  6. 9. A class of nonpolar organic compounds that are insoluble in water and are used for energy storage and cell membranes in living things.
  7. 10. The building block of matter; the smallest possible particle of an element
  8. 12. A substance that binds to an enzyme and reduces its activity, thus slowing a chemical reaction that
  9. 13. The attraction of particles in one substance for particles in a different substance.
  10. 14. change: A change in a substance that does not change the identity of the substance (e.g., a change of form or state).
  11. 15. A measurement of the average speed of the particles within a substance.
  12. 16. An attraction between two atoms as a result of sharing or transferring valence electrons.
  13. 18. Quality of molecules having an uneven distribution of electrical charge, resulting in some regions of a
  14. 23. A substance that can produce hydroxide ions (OH−) or accept hydrogen ions (H+) in solution.
  15. 25. The ability to do work. Especially in biology, the driver of physical and chemical processes necessary for life
  16. 27. A substance that can produce hydrogen ions (H+) in solution.
  17. 29. The physical stuff that makes up the universe. Anything that occupies space and has mass
  18. 30. A naturally occurring catalyst, usually a protein.