Vocabulary Terms

5. an organism that is able to form nutritional organic substances from simple inorganic substances such as carbon dioxide.
8. a colorless, odorless reactive gas, the chemical element of atomic number 8 and the life-supporting component of the air.
9. A substance present in all living cells that provides energy for many metabolic processes and is involved in making RNA.
10. (in green plant cells) a plastid that contains chlorophyll and in which photosynthesis takes place.
11. an internal system of interconnected membranes, that carry out the light reactions of photosynthesis.
12. A chemical process that occurs in plants, algae, and some types of bacteria, when they are exposed to sunlight.

1. an organism deriving its nutritional requirements from complex organic substances.
2. the supportive tissue of an epithelial organ, tumor, gonad, etc., consisting of connective tissues and blood vessels.
3. the cycle of chemical reactions where the carbon from the carbon cycle is fixed into sugars.
4. a green pigment, present in all green plants and in cyanobacteria, responsible for the absorption of light to provide energy for photosynthesis. Its molecule contains a magnesium atom held in a porphyrin ring.
6. the reaction which occurs as the first phase of photosynthesis, in which energy in the form of light is absorbed and converted to chemical energy in the form of ATP.
7. the main type of sugar in the blood and is the major source of energy for the body's cells.