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16 Cards in this Set

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  • Back
Photosynthesis
The process by which plants, autotrophic protist, and some bacteria use light energy to make sugar and other organic food molecules from carbon dioxide & water releasing O2 as a bi-product.
Chloroplast
An organelle found in plants and photosynthetic that absorbs sunlight and uses it to drive the synthesis of organic molecules (sugar) from CO2 & H2O.
Chlorophyll
A green pigment located within the chloroplasts of plants, algae, and certain prokaryotes. Chlorophyll a can participate in the light reactions, which converts solar energy to chemical energy.
Mesophyll
The green tissue of a leaf; a leaf's ground tissue system; the main site of photosynthesis. (Chloroplasts are concentrated in the cells of the mesophyll).
Stomata
(singular stoma, "mouth")
Are tiny pores surrounded by guard cells in the epidermis of a leaf. When they are open, CO2 enters and O2 exits the leaf.
Stroma
It's a thick fluid within the chloroplast that surrounds the thykaloid membrane and is involved in the synthesis of organic molecules from CO2 & H2O. Sugars are made in the stroma by the enzymes of the calvin cycle
Thylakoids
Flattened membranous sacks inside a chloroplast, that contained the thylakoid space.
Thylakoid Membrane
contain chlorophyll and the molecular complexes of the light reactions of photosynthesis
Granum
(plural, Grana)
A stack of membrane-bound thykaloids in a chloroplast. Grana are the sites where light energy is trapped by chlorophyll and converted to chemical energy during the light reactions of "PS".
Light Reaction
(1st stage of PS)
The steps in which solar energy is absorbed and converted to chemical energy in the form of ATP and NADPH. The light reactions power the sugar-producing Calving cycle but produces no sugar.
Calvin Cycle
(2nd stage of SP)
A cyclic series of chemical reactions that occur in the stoma of a chloroplast, using the carbon in CO2 and the ATP and NADPH produced by the light reaction to produce the energy-rich sugar molecule called G3P.
NADPH
Is an electron acceptor that temporarily stores energized electrons produced during the light reaction of "PS".
Visible Light
The radiation our eyes see as different colors–is only a small fraction of the spectrum. It consists of wavelengths of about 380nm to about 750nm.
Photon
A fixed quantity of light energy. The shorter the wavelength of flight, the greater the energy of a photon
Pigments
Absorbs photons and pass the energy from molecule to molecule until it reaches the reaction center.
Spectrum of Electromagnetic Radiation
Is the full ranged of electromagnetic wavelengths from the very short gamma rays to the very long wavelength radio waves.