Sunday, November 9, 2008

Vocabulary Section 8.1-8.2

8.1 Section Vocabulary
Chloroplast: the cellular organelle where photosynthesis takes place
Chlorophyll: A type of chemical compounds that chloroplasts contain, which give these organelles a green color. All green parts visible contain chloroplasts and can carry out photosynthesis
Stroma: A thick fluid of the inner membranes of a chloroplast which has a inner and outer membrane, similar to the mitochondria matrix.
Thylakoids: Suspended in the stroma are many disk-shaped sacs. They each have a membrane surrounding an interior space, arranged in stacks called grana.
Light reactions: Convert the energy in sunlight to chemical energy
Calvin Cycle: makes sugar from the atoms in carbon dioxide plus the hydrogen ions and high energy electrons carried by NADPH. the enzymes for the Calvin cycle are located outside the membrane and dissolved in the stroma.
8.2 Section Vocabulary

Wavelength: the distance between two adjacent wave
Electromagnetic spectrum: The range of types of electromagnetic energy, from the very short wavelengths of gamma rays to the very long wavelengths of radio waves
Pigments: a substance's color is due to chemical compounds
Paper chromatography: a laboratory technique which allows people to observe the different pigments in a green leaf
Photosystems: within the thylakoid membrane, chlorphyll and other molecules are arranged in clusters, each containing a few hundred pigments molecules including chlorphyll.