Across
- 3. a tiny aperture generally found in the epidermis layer of the leaves
- 7. chemical element of atomic number 6, a nonmetal which has two main forms (diamond and graphite) and which also occurs in impure form in charcoal
- 9. each of a number of flattened sacs inside a chloroplast, bounded by pigmented membranes on which the light reactions of photosynthesis take place
- 10. a form of potential energy found within chemical bonds, atoms, and subatomic particles
- 11. a simple sugar which is an important energy source in living organisms
- 13. the chemical reactions that convert carbon dioxide and hydrogen-carrier compounds into glucose
- 15. stacks of structures called thylakoids
- 16. a gas of diatomic molecules having the formula H2
- 17. a colorless, sweet, viscous liquid
- 18. a cofactor used in anabolic reactions, such as the Calvin cycle
- 20. a portion of the electromagnetic radiation given off by the Sun
Down
- 1. a colorless, odorless gas produced by burning carbon and organic compounds and by respiration
- 2. process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water
- 4. colorless, transparent, odorless liquid
- 5. found in chloroplast membranes of all higher plants suggest that these lipid structures might be essential for photosynthesis
- 6. a living organism of the kind exemplified by trees, shrubs, herbs, grasses, ferns, and mosses
- 8. colorless, odorless reactive gas
- 10. green pigments found in the mesosomes of cyanobacteria, as well as in the chloroplasts of algae and plants
- 12. a flattened structure of a higher plant, typically green and blade-like, used as solar collectors
- 14. requiring free oxygen
- 19. an organic compound and hydrotrope that provides energy to drive many processes in living cells