Across
- 2. the processes by which chemicals interact to form new chemicals with different compositions
- 5. a natural process by which trees and plants use energy from the sun and carbon dioxide from the air to make the food they need to live and grow
- 6. a substance that enters into and is altered in the course of a chemical reaction.
- 7. organisms that make their own food
- 8. a colorless, odorless gas found in our atmosphere
- 10. simple sugar with six carbon atoms and one aldehyde group
- 11. to change (something) into a different form or so that it can be used in a different way
- 12. membrane-bound cell organelles
- 13. plant cell organelles that convert light energy into relatively stable chemical energy via the photosynthetic process.
Down
- 1. the process by which cells derive energy from glucose
- 3. use light energy to make two molecules needed for the next stage of photosynthesis: the energy storage molecule ATP and the reduced electron carrier NADPH.
- 4. organism that breaks down dead organic material
- 9. describes how carbon moves between the atmosphere, soils, living creatures, the ocean, and human sources.
- 14. a substance that is present at the end of a chemical reaction