Biology Unit 3 Crossword

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Across
  1. 4. organisms that break down organic matter and return vital nutrients back into the environment
  2. 6. pigment molecules that give plants their green color
  3. 8. organisms that obtain their energy from the sun using photosynthesis
  4. 10. an organelle that converts light energy into chemical energy
  5. 11. organisms that eat only animals
  6. 12. total dry mass of all organisms in a given area
  7. 14. when a process does not require oxygen
  8. 15. an anaerobic process that is the first step in cellular respiration
  9. 16. fuels the production of ATP (hint- 2nd step of cellular respiration)
  10. 20. a measure of the number of different species found within a specific area
  11. 21. a process that transforms light energy into sugar molecules
  12. 22. organisms that eat plants and animals
Down
  1. 1. the levels of nourishment in a food chain
  2. 2. organisms that eat only plants
  3. 3. an anaerobic process that removes electrons from NADH molecules
  4. 5. a process that produces ATP by breaking down carbon-based molecules
  5. 7. when a process requires oxygen
  6. 9. a process that uses chemical energy to make sugars from carbon dioxide
  7. 13. an organelle that supplies energy to the cell, has ribosomes and DNA
  8. 17. organisms that obtain their energy by eating organisms
  9. 18. high- energy molecule that contains energy for cells (hint: "tri...")
  10. 19. where light-dependent reactions take place