Essential Biology: Chapter 7
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20 terms
Terms | Definitions |
|---|---|
 Photosynthesis equation | 6 H2O + 6 CO2 ---> C6H12O6 + 6 O2 |
| Photon | A fixed quantity of light energy |
| Stoma (stomata) | A pore surrounded by guard cells in the epidermis of a leaf |
| Mesophyll | The green tissue in the interior of a leaf |
| Thylakoid (s) | one of a number of disk-shaped membranous sacs inside a chloroplast. |
| Chlorophyll a | A green pigment in chloroplasts that participates directly in the light reactions |
| Chloroplast (s) | An organelle found in plants and photosynthesis protists |
| Wavelength | The distance between crests of adjacent waves |
| Electromagnetic spectrum | The full range of radiation, from the very short wavelengths of gamma rays to the very long wavelengths of radio signals |
| Stroma | A thick fluid enclosed by the inner membrane of a chloroplast |
| Granum (grana) | A stack of hollow disks formed of thylakoid membrane in a chloroplast |
| Photosynthesis | The process by which plants, autotrophic protists, and some bacteria use light energy to make sugars and other organic food molecules from carbon dioxide and water |
| Reaction Center | In a photosystem in a chloroplast, the chlorophyll a molecule and the primary electron acceptor that trigger the light reactions of photosynthesis |
| Calvin Cycle | The second of two stages of photosynthesis; |
| NADPH+ | oxidized electron carrier |
| NADP+ | oxidized electron carrier |
| CAM plant | A plant that uses crassulacean acid metabolism, an adaptation for photosynthesis in arid conditions |
| C3 plant | A plant the uses the calvin cycle for the initial steps that incorporate CO2 into organic material |
| C4 plant | A plant that prefaces the calvin cycle with reactions that incorporate CO2 into four-carbon compounds |
| Redox reaction | a chemical reaction in which electrons are lost from one substance (oxidation) and added to another (reduction) |
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