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19 Cards in this Set
- Front
- Back
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Photosynthesis
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The biological process that captures light energy and transforms it into the chemical energy of organic molecules, which are manufactured from carbon dioxide and water.
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Wavelength
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The distance from one wave peak to the next.
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Photons
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A particle of electromagnetic radiation.
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Ground State
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The lowest energy state in an atom.
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Fluorescence
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The emission of light of a longer wavelength than the light originally absorbed.
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Chloroplasts
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Membranous organelles that are the sites of photosynthesis in eukaryotes; occur in plant and algal cells.
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Mesophyll
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Photosynthetic tissue in the interior of a leaf.
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Stomata
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Small pores located in the epidermis of plants that provide for gas exchange for photosynthesis.
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Stroma
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A fluid space of the chloroplast that is the site of the Calvin Cycle.
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Thlyakoids
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An interconnected system of flattened, saclike, membranous structures inside the chloroplast.
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Granum
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A stack of thylakoids within a chloroplast.
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Chlorophyll
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A group of light trapping green pigments found in most photosythetic organisms.
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Absorption Spectrum
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A graph of the amount of light at specific wavelengths that is absorbed as light passes through a substance.
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Action Spectrum
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A graph of effectivenes of light at specific wavelengths in promoting a light-requiring reaction.
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Light Dependent Reactions
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Reactions of photosynthesis in which light energy absorbed by chlorophyll is used to synthesize ATP and NADH.
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Carbon fixation
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Reduction reactions of photosynthesis in which carbon from carbon dioxide becomes incorporated into organic molecules.
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Antenna Complex
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The arrangement of chlorophyll, accessory pigments, and pigment-binding proteins into light-gathering units in the thylakoid membranes.
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Reaction Center
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The portion of a photosystem that includes chlorophyll a molecules capable of transferring electrons to a primary electron acceptor.
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Photosystem
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One of two photosynthetic units responsible for capturing lighting light energy and transferring excited electrons.
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