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SHS Adv Biology 1

Photosynthesis

QuestionAnswer
Autotroph An organism that produces its own nutrients from inorganic substances.
Carotenoid Class of pigments present in thylakoid membrane of plants that aid in photosynthesis
Chlorophyll A green photosynthetic pigment present in plants
Granum A stack of thylakoids in a chloroplast
Photosystem A cluster of chlorophyll and other pigments molecules in the thylakoid membrane of chloroplast that harvest light energy for the light reactions of photosynthesis
Stroma Te jelly-like solution surrounding the thylakoids in a chloroplast
Light Reactions The initial reactions in photosynthesis which are triggered by the absorption of light by photosystem 1 and 2
Chemiosmosis A process in which the movement of protons down their concentration gradient is coupled to to synthesis of ATP
Electron Transport Chain A series of molecules found in the inner membrane of the chloroplast through which electrons pass causing the build up of protons on one side of the membrane
Pigment A substance that gives another substance or a mixture its color
Chloroplast Plant cell organelle where the process of photosynthesis takes place
Thylakoid A membrane system found within chloroplast that contains the components for photosynthesis
Calvin Cycle A biochemical pathway of photosynthesis in which carbon dioxide is converted into glucose using ATP
Stomata One way openings in a leaf or stem of a plant that enable gas exchange to occur
C4 Pathway A carbon-fixing process in which carbon dioxide is bound to a compound to form a four-carbon intermediate
Carbon fixation The synthesis of organic compounds from carbon dioxide, such as in potosyntesis
CAM pathway A water-conserving, carbon-fixing process in which the plant takes in carbon at night and fix it into various organic compounds and releases it during the day
Heterotroph An organism that obtains organic food molecules by eating other organisms or their byproducts
Primary electron acceptor A acceptor of electrons lost from chlorophyll a within the thylakoid membrane of chlorplasts
Created by: cpolumbo
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