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13 Cards in this Set
- Front
- Back
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Mesophyll
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The green leaf cells between the upper and lower epidermisof a leaf; the primary site of photosynthesis in leaves.
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Transpiration
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The loss of water to the atmosphere by a plant, through the stomates in its leaves.
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Calvin Cycle
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The cycle that involves the enzyme rubisco and that causes carbon dioxide to be incorporated, or fixed,in sugars during photosynthesis; uses chemical reactions preveiously converted from light energy.
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ATP synthetase
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An enzyme complex in the inner membrane of a mitochandrion and the thylakoid membrane of a chloroplast, through which protons flow; the formation site of ATP forom ADP and Pi during phosphorylation
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Bundle Sheath
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Tightly packed cells surrounding veins in the leaves of C4 plants that receive a rearranged 4-carbon acid in the first stage of C4 photosynthesis; w/in the b.s. cells, CO2 is released and reincorporated by rubisco into PGA
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Cuticle
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In plants, a noncellular, waxy outer layer covering certain leaves and fruits.
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Chlorophyll
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The green pigments of plants and many microorganisms; converts light energy (via changes involving electrons) to chemical energy that is used in biological reactions
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NADP+
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nicotinamide adenine dinucleotide phosphate; a hydrogen-carrier molecule that forms NADPH in the light reactions of photosynthesis
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Photorespiration
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A metabolistic pathway in plants that uses O, produces CO2, generates no ATP, and slows photosynthesis output; generally occurs on hot, dry bright days, when stomates close and O concentration in the leaf exceed that of CO2
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Stomates
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The opening between two guard cells in the epidermis of a plant leaf through which gases are exchanged with the air.
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Light Reactions
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The energy-capturing reactions in photosynthesis
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Limiting Factors
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An enviromental condition such as food, temperature, water, or sunlight the restricts the types of organisms and population numbers that an enviroment can support
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CAM
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Crassulacean acid metabolism; an adaptation for photosynthesis in arid conditions, in which CO2 entering open stomates at night is converted into organic acids that release CO2 during the day when the stomates are closed
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