Biology

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Across
  1. 1. 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
  2. 5. organelle that is the site of ATP (energy) production
  3. 8. An organelle found only in plant and algae cell, site of photosynthesis occurs
  4. 9. The fluid of the chloroplast surrounding the thylakoid membrane; involved in the synthesis of organic molecules from carbon dioxide and water
  5. 11. second stage of cellular respiration, in which pyruvic acid is broken down into carbon dioxide, takes place in the mitochondria, produces ATP and NADH
  6. 13. stacks of thylakoids
  7. 17. Respiration that does not require oxygen
  8. 18. A flattened membrane sac inside the chloroplast, used to convert light energy into chemical energy, site of the light reactions
  9. 19. main energy source that cells use for most of their work, made up of adenosine, ribose and 3 phosphates
  10. 20. Process that releases energy by breaking down glucose and other food molecules in the presence of oxygen, takes place in plants and animals, happens in 3 processes
Down
  1. 2. uses the high-energy electrons from the Krebs cycle to convert ADP into ATP, takes place in the mitochondria, produces the most ATP of any of the processes (34 ATP)
  2. 3. a lower-energy molecule that can be converted into ATP by the addition of a phosphate group, made up of adenosine, ribose and 2 phosphates
  3. 4. one of the carrier molecules that transfers high-energy electrons from chlorophyll to other molecules
  4. 6. reactions of photosynthesis in which energy from ATP and NADPH is used to build high-energy compounds such as sugars, also called dark reaction, no light needed, creates NADP+ and ADP, takes place in the stroma
  5. 7. Green pigment in plants that absorbs light energy used to carry out photosynthesis
  6. 10. Process by which cells release energy in the absence of oxygen
  7. 12. the breakdown of glucose by enzymes, releasing energy and pyruvate, 1st step in cellular respiration, takes place in the cytoplasm
  8. 14. electron carrier that provides high-energy electrons for photosynthesis
  9. 15. Respiration that requires oxygen
  10. 16. reactions reactions of photosynthesis that use energy from light to produce ATP and NADPH, also produces O2