Chapter 6 Photosynthesis Flashcards
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35101221 | Autotroph | an organism that produces its own nutrients from inorganic substances or from the environment instead of consuming other organisms | 0 | |
35101222 | Photosynthesis | the process by which plants, algae, and some bacteria use sunlight, carbon dioxide and water to to produce carbohydrates and oxygen | 1 | |
35101223 | Heterotroph | an organism that obtains organic food molecules by eating other organisms or their byproducts and that cannot synthesize organic compounds from inorganic materials | 2 | |
35101224 | Light Reactions | the initial reactions in photosynthesis, which are triggered by the absorbtion of light by photosystems I and II and include the passage of electrons along the electron transport chains, the production of NADPH and oxygen gas, and the synthesis of ATP through chemiosmosis | 3 | |
35101225 | Calvin Cycle | a biochemical pathway of photosynthesis in which carbon dioxide is converted into glucose using ATP | 4 | |
35101226 | Chloroplast | an organelle found in plant and algae cells where photosynthesis occurs | 5 | |
35101227 | Thylakoid | a membrane system found within chloroplasts that contains the components for photosynthesis | 6 | |
35101228 | Granum | a stack of thylakoids in a chloroplast | 7 | |
35101229 | Stroma | in plants, the solution that surrounds the thylakoids in a chloroplast | 8 | |
35101230 | Pigment | a substance that gives another substance or mixture its color | 9 | |
35101231 | Chlorophyll | a green pigment that is present in most plant cells, that gives plants their characteristic green color, and that reacts with sunlight, carbon dioxide, and water to form carbohydrates | 10 | |
35101232 | Carotenoid | a class of pigments that are present in the thylakoid membrane of plants and that aid in photosynthesis | 11 | |
35101233 | Photosystem | in the thylakoid membranes of chloroplasts, a cluster of chlorophyll and other pigment molecules that harvest light energy for the light reactions of photosynthesis | 12 | |
35101234 | Primary Electron Acceptor | in chloroplasts, an acceptor of electrons lost from chlorophyll a; found in the thylakoid membrane | 13 | |
35101235 | Electron Transport Chain | a series of molecules, found in the inner membranes of mitochondria and chloroplasts, through which electrons pass in a process that causes protons to build up on one side of the membrane | 14 | |
35101236 | Chemiosmosis | in chloroplasts and mitochondria, a process in which the movement of protons down their concentration gradient across a membrane is coupled to the synthesis of ATP | 15 | |
35101237 | Carbon Fixation | the synthesis of organic compounds from carbon dioxide, such as in photosynthesis | 16 | |
35101238 | Stoma | one of many openings in a leaf or a stem of a plant that enable gas exchange to occur | 17 | |
35101239 | C4 pathway | a carbon-fixing process in which carbon dioxide is bound to a compound to form a four-carbon intermediate | 18 | |
35101240 | CAM pathway | a water-conserving, carbon-fixing process; ____ plants take in carbon at night and fix it into various organic compounds and release it during the day | 19 |