Breakdown of the Electron Transport Chain

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Across
  1. 5. This enzyme helps cells defend themselves against superoxide radicals by catalyzing the conversion of some of the radicals into hydrogen peroxide and molecular oxygen
  2. 6. This coenzyme shuttles electrons from Complex I and Complex II to Complex III
  3. 7. This is a large complex composed of two copies each of Complex I, Complex III, and Complex IV
  4. 8. This enzyme catalyzes the transfer of electrons from QH2 to cytochrome c and pumps protons out of the matrix
  5. 9. This peripheral membrane protein transfers electrons from Complex III to Complex IV
  6. 11. At this enzyme, electrons from FADH2 enter the electron transport chain. This enzyme does not pump protons
  7. 12. This transmembrane protein accepts electrons from Cyt c and transfers them to the final electron acceptor in the electron transport chain, O2
Down
  1. 1. This is a 2Fe-2S center within the Q-cytochrome c oxidoreductase enzyme which plays a role in accepting and transferring electrons
  2. 2. At this enzyme, electrons from NADH flow to coenzyme Q which leads to the pumping of hydrogen ions out of the matrix
  3. 3. This electron carrier is similar to FAD but lacks the nucleotide component
  4. 4. This is the reduced form of an electron carrier involved in cellular respiration which enters the electron transport chain at Complex II
  5. 9. This enzyme catalyzes the dismutation of hydrogen peroxide created by superoxide dismutase and other reactions into water and molecular oxygen
  6. 10. This is the reduced form of an electron carrier involved in cellular respiration which enters the electron transport chain at Complex I