chapter 2: chemistry of life

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Across
  1. 2. / a macromolecule made of many monomers bonded together.
  2. 6. / _____ ______ are part of the structures for proteins and DNA, the genetic material for all organisms.
  3. 7. / each subunit in the complete molecule.
  4. 8. / a chemical reaction releases more energy than it absorbs.
  5. 9. / nonpolar molecules that include fats, oils, and cholesterol.
  6. 10. / a substance that decreases the activation energy needed to start a chemical reaction, and increases the rate of the chemical reaction.
  7. 13. / a polymer made of monomers called amino acids.
  8. 17. / chains of carbon atoms bonded to hydrogen atoms.
  9. 18. / Starches, glycogen, and cellulose are _______
  10. 23. / The amount of energy released is ____ to the amount of energy that breaks the same bond
  11. 25. / Energy is both absorbed and released in a ________ _______
  12. 26. / Picture 3
  13. 27. / change substances into different substances by breaking and forming chemical bonds.
  14. 28. / ______, Nitrogen, hydrogen and oxygen make up 96% of the human body; known to be the building block of life.
  15. 31. / Enzymes decrease __________ _________
  16. 33. / Amino acids for covalent bonds that are called _______ ______.
  17. 35. / _______ fats have the maximum number of hydrogen atoms possible.
  18. 37. / Releases H+ ions
  19. 38. / Electrons are found in the _______ surrounding the nucleus.
  20. 39. / molecules that contain carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur.
  21. 40. / molecules composed of carbon, hydrogen, and oxygen, and they include sugars and starches.
  22. 42. / Almost all enzymes are _______
  23. 44. / a homogeneous mixture.
  24. 46. / two or more atoms held together by covalent bonds.
Down
  1. 1. / the amount of energy that will break a bond between two atoms.
  2. 2. / Picture 2
  3. 3. / catalysts for chemical reactions in living things.
  4. 4. / the substance that is present in the greater amount and that dissolves another substance.
  5. 5. / ________ is the reason why you see the upward curve in a test tube full of water.
  6. 10. / the attraction among molecules stick to each other.
  7. 11. / the specific reactants that an enzyme acts one.
  8. 12. / Removes H+ ions
  9. 13. / _______ ________- dissolves in water.
  10. 14. /_______ _________ such as fats, and oils rarely dissolve in water, they will dissolve in nonpolar solvents.
  11. 15. / ______ are on the left side of the equation and Products are on the right.
  12. 16. / _____ ______ ______ is when hydrogen bonds canses water to have a resistance to high temperature change.
  13. 19. / reached when both the reactants and products are made at the same rate.
  14. 20. / Picture 1
  15. 21. / Carbon-based molecules have 3 fundamental structures: Straight Chain, ______ ______, and Rings.
  16. 22. / polymers that are made up of monomers called nucleotides.
  17. 24. / Many reactions in living things are _______
  18. 25. / forms when atoms share a pair of electrons.
  19. 29. / Hydrogen bonding is shown to appear amongst ______ ________.
  20. 30. / a chemical reaction absorbs more energy than it releases.
  21. 32. / forms through the electrical force between oppositely charged ions.
  22. 34. / An enzyme attaches to a ________
  23. 36. / a substance that dissolves in a solvent.
  24. 38. / Covalent bonds are generally very strong, but it depends on how many ______ are present.
  25. 41. / an attraction between a slightly positive hydrogen atom and a slightly negative atom.
  26. 43. / ______ helps regulate the pH in organisms.
  27. 45. / Solution of pH of ______ is very acidic.