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AP Biology Chapter 8 Flashcards

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5705709470autotrophorganisms that feed themselves without eating anything derived from other living beings0
5705720001heterotrophsorganisms that live on compounds produced by other organisms1
5705726044mesophyllthe tissue in the interior of a leaf2
5705733271stromathe dense fluid inside a chloroplast3
5705772163granum (pl grana)a stacked membranous structure within the chloroplasts of plants and green algae that contains the chlorophyll and is the site of the light reactions of photosynthesis4
5705786318thylakoid membranethe third membrane system of a plant that creates sac-like structures that are stacked into grana5
5705800870stomatapores in leaves through which CO2 enters and O2 exits6
5705813381chlorophylla pigment in the chloroplasts of a leaf that absorbs light energy used for photosynthesis7
5705828961photophosphorylationthe attaching of phosphate molecules to another molecule using energy derived from light energy8
5705976997cyclic photophosphorylationphotophosphorylation where the materials used in the beginning of photophosphorylation are created by it9
5705837570carbon fixationthe initial incorporation of carbon from the air into organic compounds10
5705846389NADPan ion acceptor11
5705855237antioxidanta substance that inhibits oxidation, especially one used to counteract the deterioration of stored food products12
5705880249photosystems (I and II)a reaction-center complex surrounded by light-harvesting complexes where light energy is transferred to chemical energy13
5705890299electron acceptora molecule capable of being reduced and accepting electrons14
5705911847reaction centeran organized association of proteins holding a special pair of chlorophyll a molecules15
5705921669photonnontangible particles of light that have a fixed quantity of energy16
5705931824ground statean atom's lowest state of energy where each electron is on the lowest energy level possible17
5705966773excited statean atom's state of energy where energy has been added and electrons occupy a higher energy level than normal18
5706033231photorespirationa respiratory process in many higher plants by which they take up oxygen in the light and give out some carbon dioxide, contrary to the general pattern of photosynthesis19
5706047845RuBisCOan enzyme present in plant chloroplasts, involved in fixing atmospheric carbon dioxide during photosynthesis and in oxygenation of the resulting compound during photorespiration20
5706055485G3Pthe 3-carbon carbohydrate directly produced by the Calvin Cycle21
57060691773-PGAthe first stable intermediate in glycolysis22
5706112515PEPa three-carbon compound that is the substrate for carbon dioxide fixation during photosynthesis in C 4 plants; an intermediate in glycolysis that is the precursor to pyruvate23
5706086249PEP carboxylasean enzyme responsible for the formation of the four-carbon compound oxaloacetate by catalyzing the binding of one molecule of carbon dioxide to the three-carbon compound PEP24
5706131645CAM plantplants whose stomatas open and close in reaction to light energy received in the daytime or nighttime; they open their stomata at night to take in CO2 and close them during the day to preserve water25
5706149901pigmentan organic compound that gives a characteristic color to plant or animal tissues and is involved in vital processes26
5706160665oxaloacetatea metabolic intermediate in the Krebs cycle 127
5706187184malatea metabolic intermediate in the Krebs cycle 228

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