Across
- 1. The reaction center chlorophyll (or the primary electron donor) of photosystem II that is most reactive and best in absorbing light at wavelength of 680 nm
- 4. a colorless, odorless reactive gas, the chemical element of atomic number 8 and the life-supporting component of the air.
- 5. a colorless, odorless gas produced by burning carbon and organic compounds and by respiration. It is naturally present in air (about 0.03 percent) and is absorbed by plants in photosynthesis.
- 6. a copper-containing protein that mediates electron-transfer. It is found in a variety of plants, where it participates in photosynthesis.
- 8. a colorless, transparent, odorless liquid that forms the seas, lakes, rivers, and rain and is the basis of the fluids of living organisms.
Down
- 1. a benzoquinone that acts as a primary electron carrier in the photosynthetic tissues of higher plant as well as in cyanobacteria
- 2. small proteins containing iron and sulfur atoms organized as iron–sulfur clusters.
- 3. the main type of sugar in the blood and is the major source of energy for the body's cells.
- 6. a particle representing a quantum of light or other electromagnetic radiation. A photon carries energy proportional to the radiation frequency but has zero rest mass.
- 7. nicotinamide adenine dinucleotide phosphate