biology

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Across
  1. 1. 6
  2. 3. An organism that makes its own food
  3. 4. a substance that takes part in and undergoes change during a reaction.
  4. 7. process by which plants and some other organisms use light energy to convert water and carbon dioxide into oxygen and high-energy carbohydrates such as sugars and starches
  5. 8. is the type of respiration that converts glucose to energy without oxygen
  6. 12. P 15
  7. 13. requires oxygen
  8. 15. respiration- Process that releases energy by breaking down glucose and other food molecules in the presence of oxygen
  9. 18. the solid part of the earth consisting of the crust and outer mantle
  10. 20. all the waters on the earth's surface, such as lakes and seas, and sometimes including water over the earth's surface, such as clouds.
  11. 24. organelles that convert chemical energy stored in food into compounds more convenient
  12. 25. first step in releasing the energy of glucose, in which a molecule of glucose is broken into two molecules of pyruvic acid
  13. 27. an organism, especially a soil bacterium, fungus, or invertebrate, that decomposes organic material.
Down
  1. 1. site of photosynthesis
  2. 2. anything that takes up space and has mass
  3. 5. A thin layer of gases surrounding Earth
  4. 6. A green pigment found in the chloroplasts of plants, algae, and some bacteria
  5. 9. (Adenosine Diphosphate) The compound that remains when a phosphate group is removed from ATP, releasing energy
  6. 10. a substance that forms in a chemical reaction
  7. 11. reactions- Reactions of photosynthesis that do not require light but use energy produced and stored during light reactions to make glucose
  8. 14. the part of Earth where life exists
  9. 16. reactions- The steps in photosynthesis that occur on the thylakoid membranes of the chloroplast and that convert solar energy to the chemical energy of ATP and NADPH, evolving oxygen in the process.
  10. 17. an organism deriving its nutritional requirements from complex organic substances.
  11. 19. cycle- second stage of cellular respiration, in which pyruvic acid is broken down into carbon dioxide in a series of energy-extracting reactions
  12. 21. process that does not require oxygen
  13. 22. N 7
  14. 23. chain transport -describes a situation in which oxygen is not present
  15. 26. main energy source that cells use for most of their work