photosynthesis

5. the part of a tissue or organ with a structural or connective role
8. a colorless, odorless reactive gas, the chemical element of atomic number 8 and the life-supporting component of the air
10. an organelle within the cells of plants and certain algae that is the site of photosynthesis
11. the physical interaction among electric charges, magnetic moments, and the electromagnetic field
13. a response of an organism or living tissue to a stimulus
17. a microscopic organism, especially a bacterium, virus, or fungus
18. gas formed during respiration and by the decomposition of organic substances; absorbed from the air by plants in photosynthesis
19. a pigment that gives plants their green color
20. relating to, involving, or requiring free oxygen

1. a simple sugar which is an important energy source in living organisms and is a component of many carbohydrates
2. the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar
3. organisms whose cells lack a nucleus and other organelles
4. the region between 400 nm and 700 nm is what plants use to drive photosynthesis
6. an oxide containing two atoms of oxygen in its molecule or empirical formula
7. the principal molecule for storing and transferring energy in cells
9. any substance consisting of matter
12. the surroundings or conditions in which a person, animal, or plant lives or operates
14. a subcellular structure that has one or more specific jobs to perform in the cell
15. a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction
16. a unique substance that consists of two or more elements combined in fixed proportions