Biology

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Across
  1. 3. first step in releasing the energy of glucose, in which a molecule of glucose is broken into two molecules of pyruvic acid
  2. 6. Respiration that requires oxygen
  3. 9. The mostly solid, rocky part of the Earth; extends from the center of the core to the surface of the crust.
  4. 11. an electron carrier that provides the high-energy electrons needed to make carbon-hydrogen bonds in the third stage of photosynthesis
  5. 13. Respiration that does not require oxygen
  6. 16. the envelope of gases surrounding the earth or another planet.
  7. 17. electron carrier that stores energy used to make ATP
  8. 18. second stage of cellular respiration, in which pyruvic acid is broken down into carbon dioxide in a series of energy-extracting reactions
  9. 19. Process by which cells release energy in the absence of oxygen
  10. 20. a natural mineral containing chemical compounds often used in fertilizers
Down
  1. 1. Process that releases energy by breaking down glucose and other food molecules in the presence of oxygen
  2. 2. Consists of all life on Earth and all parts of the Earth in which life exists
  3. 4. (adenosine triphosphate) main energy source that cells use for most of their work
  4. 5. electron carrier involved in glycolysis
  5. 7. oxygen
  6. 8. series of electron carrier proteins that shuttle high-energy electrons during ATP-generating reactions
  7. 10. Conversion of light energy from the sun into chemical energy.
  8. 12. (Adenosine Diphosphate) The compound that remains when a phosphate group is removed from ATP, releasing
  9. 14. chemical formula for glucose
  10. 15. During aerobic respiration, which of the following directly donates electrons to the electron transport chain at the lowest energy level