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24 Cards in this Set
- Front
- Back
- 3rd side (hint)
Autotrophs |
Organism that obtains organic food molecules without eating other organisms |
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Photoautotrophs |
An organism that harnesses light energy to drive the synthesis of organic compound from carbon dioxide |
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Chemoautotrophs |
An organism that needs only carbon dioxide as a carbon source but obtains energy by oxidizing inorganic subtances |
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Chlorophyll |
Green pigment located within the chloroplasts of plants |
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Mesophyll |
Ground tissue of a leaf, sandwiched between upper and lower epidermis and specialized for photosynthesis |
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Stomata |
Microscopic pore surrounded by guard cells in the epidermis of leaves and stems that allow gas exchange |
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Light reaction |
Steps in photosynthesis that occur on thylakoid membranes of the chloroplast and convert solar energy to chemical energy of ATP and NADPH |
Evolving oxygen |
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Calvin cycle |
Second of two major stages in photosynthesis involving atmospheric CO2 fixation and reduction of fixed carbon into carbohydrate |
Follows light reaction |
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Carbon fixation |
Incorporation of carbon from from CO2 into organic compound by an autotrophic organism |
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Photophosphorylation |
Process of generating ATP from. ADP and phosphate by means of a proton motive force generated by thylakoid membrane of chloroplast firing light reactions |
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Wave length |
Distance between crests of waves, such as electromagnetic spectrum |
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Visible light |
Portion of electromagnetic spectrum detected as various colors by the human eye |
380nm-750nm |
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Chlorophyll a |
Type of blue-green photosynthetic pigment that participates directly in light reactions |
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Reaction center |
Complex of proteins associated w 2 special chlorophyll a molecules and a primary electron acceptor. Located in photosystem, triggers light reactions of photosynthesis |
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Primary electron acceptor |
Specialized molecule sharing the reaction center with the pair of chlorophyll a molecules; accepts an electron from these |
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Photosystem I |
One of two light capturing units in a chloroplasts thylakoid membrane: has 2 molecules of P700 chlorophyll a |
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Photosystem II |
One of two light capturing units in chloroplasts thylakoid membrane: two molecules of P680 chlorophyll a |
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Cyclic electron flow |
Route of electron flow during the light reactions of photosynthesis that involves only photosystem I and produces ATP, not NADPH or oxygen |
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Non-cyclic electron flow |
Route of electron flow during light reactions of photosynthesis that involves both photosystems and produces ATP, NADPH and oxygen |
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C3 plants |
Uses the Calvin cycle for initial steps that incorporate CO2 into organic material, forming 3-carbon compound |
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C4 plants |
Plant that prefaces the Calvin cycle with reactions that incorporate CO2 into 4-carbon compound, which then supplies CO2 for Calvin cycle |
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CAM plants |
Uses crassulacean acid metabolism, an adaption for photosynthesis in arid conditions. Carbon dioxide entering stomata during night is converted to organic acids |
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Heterotrophs |
An organism that obtains organic food molecules by eating other organisms or their by-products |
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Electromagnetic spectrum |
Entire spectrum of radiation ranging in wavelength from less than a nanometer to more than a kilometer |
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