Cellular Respiration

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Across
  1. 2. Transport Chain (ETC) series of electron carrier proteins that shuttle high-energy electrons during ATP-generating reactions
  2. 5. Powerhouse of the cell, organelle that is the site of ATP (energy) production
  3. 7. final electron acceptor in the electron transport chain
  4. 9. product of cellular respiration
  5. 12. phosphorylation The enzyme-catalyzed formation of ATP by direct transfer of a phosphate group to ADP from an intermediate substrate in catabolism.
  6. 14. A catabolic process that makes a limited amount of ATP from glucose without an electron transport chain and that produces a characteristic end product, such as ethyl alcohol or lactic acid.
  7. 15. respiration formula C6H12O6 + 6O2 --> 6CO2 + 6H2O + ATP
  8. 16. An energy-carrying coenzyme produced by glycolysis and the Krebs cycle. NADH carries energy to the electron transport chain, where it is stored in ATP.
  9. 18. phosphorylation The production of ATP using energy derived from the redox reactions of an electron transport chain; the third major stage of cellular respiration.
Down
  1. 1. cycle stage of cellular respiration, in which acetyl-CoA is broken down into carbon dioxide in a series of energy-extracting reactions
  2. 3. A process for synthesizing ATP using the energy of an electrochemical gradient and the ATP synthase enzyme.
  3. 4. space the fluid filled space between the inner and outer mitochondrial membranes; maintains a lower pH than the mitochondrial matrix.
  4. 5. matrix The compartment of the mitochondrion enclosed by the inner membrane and containing enzymes and substrates for the Krebs cycle; maintains a higher pH than the intermembrane space.
  5. 6. force The potential energy stored in the form of an electrochemical gradient, generated by the pumping of hydrogen ions across biological membranes during chemiosmosis.
  6. 8. Three-carbon compound that forms as an end product of glycolysis.
  7. 10. gradient The diffusion gradient of an ion, representing a type of potential energy that accounts for both the concentration difference of the ion across a membrane and its tendency to move relative to the membrane potential.
  8. 11. the breakdown of glucose by enzymes, releasing energy and pyruvic acid.
  9. 13. (adenosine triphosphate) main energy source that cells use for most of their work
  10. 17. respiration Respiration that requires oxygen