Photosynthesis

3. requires sunlight, carbon dioxide, and water as starting reactants
5. contribute enormous quantities of food and oxygen to global food chains
6. a type of autotroph that uses sunlight and carbon from carbon dioxide to synthesize chemical energy in the form of carbohydrates
9. given to the electron allows it to break free from an atom of the chlorophyll molecule
10. radiation has a characteristic range of wavelengths
11. cycle reactions can be thought of as “full” because they bring energy

1. is organism incapable of photosynthesis that must therefore obtain energy and carbon from food by consuming other organisms
2. a pigment (a molecule that absorbs light) through which the entire process of photosynthesis begins
4. of thylakoids is called a granum
6. molecule in the photosystem absorbs one photon, a quantity or “packet” of light energy, at a time
7. is an organism that can produce its own food
8. organisms on earth consist of one or more cells