Chapter 8

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Across
  1. 5. sum total of all chemical reactions occurring in a biological system at a
  2. 6. Energy (Ea): amount of energy required to start a reaction
  3. 7. Fit: enzyme changes shape when it binds substrate, altering shape of active
  4. 10. Site: place on an enzyme where substrate binds
  5. 12. substances formed as a result of the chemical reaction
  6. 15. Reaction: complex molecules made from simple molecules
  7. 16. Energy: energy of movement
  8. 17. consume free energy (+DG)
  9. 20. release free energy (-DG)
  10. 22. Complex (ES): held together by hydrogen bonds, electrical
  11. 29. State: reactive mode of the substrate (aka- reactant) after there has been
  12. 30. catalytic RNA’s that speed up reactions involving their own nucleotides
  13. 31. of Thermodynamics: apply to all matter and all energy transformations in the
  14. 32. Energy: stored energy
Down
  1. 1. Inhibitor: compete with natural substrate for binding sites
  2. 2. Energy (G): usable energy that can do work
  3. 3. time
  4. 4. Inhibitor: bind to enzyme at site other than the active site
  5. 8. Inhibitor: bind to enzyme-substrate complex, preventing release of products
  6. 9. starting substances in a chemical reaction
  7. 11. intermediate: unstable reactants with higher free energy
  8. 13. input of energy to initiate the reaction
  9. 14. or covalent bonds
  10. 18. Equilibrium: balance between forward and reverse reactions
  11. 19. (H): total energy
  12. 20. capacity to do work, or the capacity for change
  13. 21. Reaction: when atoms collide with enough energy to combine or change
  14. 23. (S): measure of disorder in a system
  15. 24. reactants
  16. 25. Free Energy: (DG° )change in free energy of a reaction under standard
  17. 26. changing the enzyme’s shape
  18. 27. Reaction: complex molecules broken down to simpler ones
  19. 28. Regulation: an effector binds an enzyme at a site different from the active
  20. 33. bonding partners