Across
- 4. A substance produced during a chemical reaction
- 5. Energy from the sun that reaches earth as visible light, and ultraviolet and infrared (heat) radiation
- 6. Energy stored in chemical bonds and released through chemical reactions
- 10. A process by which plants and some other organisms use light energy to convert water and carbon dioxide into oxygen and glucose sugar
Down
- 1. A sugar composed of six carbon atoms that is the preferred energy source for most cells;produced by photosynthesis
- 2. Small openings on the underside of a leaf or lower epidermis. Oxygen and carbon dioxide gases move through these openings
- 3. A green pigment in plants, algae, and bacteria that absorbs light energy used to carry out photosynthesis
- 7. The smallest particle of an element; made of electrons, protons, and neutrons
- 8. A substance that takes part in and undergoes change during a reaction
- 9. A membrane-bound organelle in plants that is the site of photosynthesis