Across
- 5. contains chlorophyll and in which photosynthesis takes place
- 7. an organism that decomposes organic material.
- 10. the part of the world in which life can exist
- 11. chemical element with the symbol C
- 12. use sunlight to synthesize foods from carbon dioxide and water
- 14. citric acid cycle
- 15. most plentiful element in Earth's atmosphere and is a constituent of all living matter
Down
- 1. anaerobic (non-oxygen-requiring) pathway for breaking down glucose
- 2. a series of four protein complexes that couple redox reactions
- 3. green coloring matter found mainly in the chloroplasts
- 4. energy molecule
- 6. any of the almost spherical concentric regions of matter that make up the earth and its atmosphere, as the lithosphere and hydrosphere.
- 8. powerhouse of the cell
- 9. requiring free oxygen
- 13. the breakdown of glucose by enzymes, releasing energy and pyruvic acid.