Photosynthesis

3. a naturally abundant, nonmetallic element that occurs in all organic compounds
5. the pursuit and application of knowledge and understanding of the natural and social world following a systematic methodology based on evidence
7. a chemical process that occurs in plants, algae, and some types of bacteria, when they are exposed to sunlight
8. the natural agent that stimulates sight and makes things visible
13. a waste product made by the body
14. an organism that eats other plants or animals for energy and nutrients
16. the powerhouse of the cell
17. an organelle within the cells of plants and certain algae that is the site of photosynthesis
19. a stack of #10
20. a colorless, odorless reactive gas
21. a substance made from two or more different elements that have been chemically joined
22. a process in which glucose (sugar) is partially broken down by cells in enzyme reactions that do not need oxygen
23. the process by which microbes create sugars (food) using energy released from chemical reactions
24. cell structures in the epidermis of tree leaves and needles that are involved in the exchange of carbon dioxide and water between plants and the atmosphere

1. chemical process by which molecules such as glucose are broken down anaerobically
2. a colorless, odorless, tasteless, flammable gaseous substance that is the simplest member of the family of chemical elements
4. a young tree, vine, shrub, or herb
6. all the animals, plants, and other things in the world that are not made by people, and all the events and processes that are not caused by people
9. a substance occurring in plant or animal tissue and producing a characteristic color
10. any system capable of performing functions such as eating, metabolizing, excreting, breathing, moving, growing, reproducing, and responding to external stimuli
11. the cells and tissues that support and give structure to organs, glands, or other tissues in the body
12. an organism that can produce its own food using light, water, carbon dioxide, or other chemicals
13. any member of the most important class of pigments involved in photosynthesis
15. any of the membranous disks of lamellae within plant chloroplasts that are composed of protein and lipid and are the sites of the photochemical reactions of photosynthesis.
18. the star around which the earth orbits
22. a simple sugar which is an important energy source in living organisms