Key Terms 7

1. reactions where electrons pass from one molecule of the electron transfer chain to the next.
6. any light-driven reaction that attaches phosphate to a molecule.
7. semifluid matrix in chloroplasts.
9. metabolic pathway through which organisms can harness the energy of light to build organic molecules from inorganic raw materials.
10. the most common photosynthetic pigment in plants, photosynthetic protists, and cyanobacteria.
12. groups of hundreds of pigments and other molecules that work as a unit to begin reactions of photosynthesis.

1. enzyme that fixes carbon by attaching CO₂ to five carbon RuBP, or ribulose biphosphate.
2. organism that makes sugars from CO₂ and H₂O, using the energy of sunlight.
3. visible light is part of a spectrum of electromagnetic energy radiating from the sun, it goes from 400nm to 700nm
4. stacks of disks that are connected by channels in the thylakoid membrane, inside the chloroplasts.
5. organic molecule that selectively absorbs light of specific wavelengths.
6. packets where electromagnetic energy of light is organized.
8. the distance between the crests of two successive waves of light (measured in nm)
10. an organelle that specializes in photosynthesis that takes place in plants and many protists.
11. process by which any molecule becomes broken down by light energy.