| A | B |
|---|
| Photosynthesis | conversion of light energy into chemical energy in plants |
| Autotrophs | an organism that makes its own food |
| heterotroph | An organism that must consume organic material |
| Chlorophyll | The green pn instrumentigment in chloroplasts |
| mesophyll | the interior tissue of the leaf |
| stomata | pores on the under part of the leaf |
| NADP | nicotinamide adenine dinucleotide phosphate |
| Light reactions | part of photosynthesis where sloar energy is converted in to oxygen |
| Calvin Cycle | Part of photosynthesis where CO2 is converted into sugars |
| photophosphorylation | the adding of a phosphate to ADP to make ATP |
| Carbon Fixation | the initial incorporation of carbon into organic material |
| wavelenght | the distance between crests of electromagnetic waves |
| electromagnetic spectrum | the entire spectrum of radiation |
| visible light | light detected by the human eye as the various colors |
| photons | discrete particles |
| spectrometer | a instrument that can measure the abillity of a pigment to absorb various wavelenghts of light |
| absorption spectrum | a graph plotting a pigment's light absorption versus wavelenght |
| chorophyll a | A type of blue-green photosythetic pigment that participates directely in light reactions |
| chorophyll b | a yellow-green accessory photosynthetic pigment that transfers energy to chlorophyll a |
| carotenoids | absorbs wavelenghts of light that chlorophyll can't. |
| photosytems | enzymes that uses light to reduce electron and proton transfer chain |
| reaction center | trigger light reactions for photosynthesis |
| primary electron acceptor | gains an electron from the reacion center in an oxygen-reduction reaction |
| photosytem I | this pigment is best at absorbing light having a wavelenght of 700nm |
| photosytem II | it most effectively absorbs light of wavelenght 680nm |
| Noncyclic electron flow | the predominant route of the electron flow in the light reactions, releases oxygen and NADPH |
| NOncyclic photophosphorylation | ATP synthesis during the noncyclic electron flow |
| cyclic electron flow | photoexcited electrons that uses photosystem I instead of II, produces no NADPH and releases no oxygen |
| cyclic photophosphorylation | ATP synthesis uses cyclic electron flow |
| G3P | glyceraldehyde-3-phosphate |
| rubisco | used in carbon fixation in the calvin cycle to form sucrose |
| C3 plants | replaces the first organic compound of carbon fixation with a 3-carbon compound |
| C4 plants | They preface the calvin with an alternative mode of carbon fixation that forms a 4-carbon compound |
| photorespiration | a metabolic pathway that consumes oxygen, releases CO2, and gnerates no ATP |
| bundle-sheath cells | a type of protosynthetic cell arranged in tightly packed sheaths around the veins of the leaf |
| mesophyll cells | loosely arranged photosynthetic cell located between the bundle sheath and the leaf surface |
| PEP carboxylase | an enzyme that adds CO2 to phosphoenolpyruvate to form oxaloacetate |
| crassulacean acid metabolism | a type f metabolism in which CO2 is taken ih at night and incorporated into various organic acids. |
