Across
- 4. reaction Reaction that breaks molecules apart
- 8. Element that is the base of all life
- 10. Third stage of cellular respiration
- 15. All living and nonliving things in an environment
- 18. Shows one path of energy flow
- 21. Organism that eats other organisms for energy
- 22. First stage of cellular respiration
- 24. Two species living closely together
- 25. Process that breaks down food for energy
- 27. Substances that start a chemical reaction
- 31. Simple sugar used by cells for energy
- 32. Long chain of sugar molecules
- 34. Type of anaerobic respiration in muscles
- 37. Respiration that does not require oxygen
- 39. Organism that eats other organisms
- 40. Shows many connected paths of energy flow
Down
- 1. reaction Reaction that builds larger molecules
- 2. Organism that makes its own food
- 3. Organism that breaks down dead material
- 5. Second stage of cellular respiration
- 6. Process that turns sunlight into food
- 7. Pigment that captures light energy for photosynthesis
- 9. Two sugar molecules linked together
- 11. Type of anaerobic respiration that produces alcohol
- 12. Each step in a food chain
- 13. Both species benefit in a relationship
- 14. A chemical reaction that occurs in living things
- 16. Molecules that provide energy for organisms
- 17. A single sugar molecule
- 19. Substances formed after a chemical reaction
- 20. When two organisms need the same resource
- 23. Organelle where most ATP is made
- 26. Cycle that converts carbon dioxide into glucose
- 28. Organism that makes its own food
- 29. Organelle where photosynthesis happens
- 30. Respiration that requires oxygen
- 33. Molecule that stores and releases energy in cells
- 35. One species benefits and the other is harmed
- 36. Molecule that carries electrons in photosynthesis
- 38. Substance made of two or more elements