Photosynthesis and Cellular Respiration

3. the process in which glucose is broken down to produce energy
5. the layers of gases surrounding a planet or other celestial body.
8. a pigment that gives plants their green color and absorbs sunlight for photosynthesis
10. any series of chemical reactions in photosynthesis not requiring the presence of light and involving the reduction of carbon dioxide to form carbohydrate
15. living, active, occurring, or existing in the absence of free oxygen
16. an organism that eats other plants or animals for energy and nutrients
17. the parts of earth where life exists
19. membrane-bound organelles that generate most of the chemical energy needed to power the cells biochemical reaction

1. organism that breaks down dead organic material
2. chemical process by which molecules such as glucose are broken down anaerobically
4. an organelle within the cells of plants that is the site of photosynthesis
5. an organism that can produce its own food using light, water, and carbon dioxide.
6. anything that occupies space and has mass
7. the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar
9. the total amount of water on the planet
11. a substance that enters into and is altered in the course of a chemical reaction
12. related to, involving, or requiring free oxygen
13. all the rock, soil and sediments that make up earths land
14. the process of converting glucose into a form of energy (ATP) that is usable by cells
18. a substance that is present at the end of a chemical reaction