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Chapter 6
Section 1
| Question | Answer |
|---|---|
| an organism that produces its own nutrients from inorganic substances or from the environment instead of consuming other organisms | autotroph |
| the process by which plants, algae, and some bacteria use sunlight, carbon dioxide, and water to produce carbohydrates and oxygen | photosynthesis |
| an organism that obtains organic food molecules by eating other organisms or their byproducts and taht cannot synthesize organic compounds from inorganic materials | heterotroph |
| initial reactions in photosynthesis; triggered by absorption of light by photosystems I and II; include the passage of electrons along the electron transport chains, the production of NADPH and oxygen gas, and the synthesis of ATP through chemosynthesis | light reactions |
| an organelle found in plant and algae cells where photosynthesis occurs | chloroplast |
| a membrane system found within chloroplasts that contains the components for photosynthesis | thylakoid |
| a stack of thylakoids in a chloroplast | granum |
| in plants, the solution that surrounds the thylakoids in a chloroplast | stroma |
| a substance that gives another substance or a mixture its color | pigment |
| 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 | chlorophyll |
| a class of pigments that are present in the thylakoid membrane of plants and that aid in photosynthesis | carotenoid |
| in the thylakoid membranes of chloroplasts, a cluster of chlorophyll and other pigment molecules that harvest light energy for the light reactions of photosynthesis | photosystem |
| in chloroplasts, an acceptor of electrons lost fro chlorophyll a; found in the thylakoid membrane | primary electron acceptor |
| 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 | electron transport chain |
| the production of carbohydrates through the use of energy from inorganic molecules instead of light | chemiosmosis |
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fasolak16
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