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Bio 121 Chapter 9

QuestionAnswer
Absorption Spectrum graph of the amount of light at specific wavelength that is absorbed as light passes through a substance
action specrtum graph of the effectiveness of light a specific wavelength in prompting a light requiring reaction
Antenna complexes arrangement of chlorophyll, accessory pigments and pigment binding proteins into gathering units in the thylakoid membranes of photoautrophic eukaryotes
ATP Synthase large enzyme complex that catalyzes the formation of ATP from ADP and inorganic phosphate by chemiosmosis
Autotrophs organism that synthesizes complex organic compounds from simple inorganic raw materials
Calvin Cycle cyclic series of reactions in the Chloroplast stroma in photosynthesis, fixes carbon dioxide and produces carbohydrates
Carbon Fixation Reactions reduction reactions of photosynthesis in which carbon from carbon dioxide becomes in corporated into organic molecules, leading to production of carbohydrate.
Carotenoids group of yellow to orange plant pigments synthesized from isoprene subunits; include carotenes and xanthophylls
Chlorophyll a pigment that initates light-dependent reactions of photosynthesis
Chlorophyll b accessory pigment that also participates in photosynthesis
Chloroplast membranous organelles that are the site of photosynthesis in eukaryotes, occur in some plant and algal cells
Electromagnetic radiation visible light is a small portion of a continious range of radiation called the electromagnetic spectrum
Glyceraldehyde-3-phosphate (G3P) phosphorylated 3 carbon compound that is an important intermediate in glycolysis and in the calvin cycle
Grana Thylakoid sacs are arranged in these stacks
Guard Cells one of a pair of epidermal cells that adjust their shape to form a stomatal pore for gas exchange
Heterotrophs organism that cannot synthezise its own food, so must rely on other oragnisms for food and other body building material
Light Dependent reactions reactions of photosynthesis in which light energy absorbed by chlorphyll is used to synthesize ATP and usually NADPH
Mesophyll photosynthetic tissue in the interior of a leaf.
P680 Chlorophyll a molecules that serve as the reaction center of photosystem II.
P700 Chlorophyll a molecules that serve as the reaction center of photosystem I.
Photolysis the photochemical splitting of water in the light-dependent reactions of photosynthesis
Photon a particle of electromagnetic radiation.
Photosynthesis Biological process that captures light and transfers it into the chemical energy of organic molecules
Photosystem I responsible for capturing light energy and transferring excited electrons. strongly absorbs light at about 700 nm
Photosystem II responsible for capturing light energy and transferring excited electrons. strongly absorbs light at about 680 nm
Producer organisms that synthesizes complex organic compounds from simple inorganic raw material.
Reaction Center the portion of photosystem that includes chlorophyll a molecules capable of transferring electrons to a primary electron acceptor
Redox Reactions Chemical reactions in which one or more electrons are transferred from one substance to another.
Ribulose Bisphospate five carbon phosphorylated compound with a high energy potential that reacts with carbon dioxide in the initial step of the calvin cycle
Stomata small pores located in the epidermis of plants that provide fun gas exchange for photosynthesis
Stroma fluid space of the chloroplast, encloses by the chloroplast inner membrane and surrounding the thylakoids
Thylakoids an inter connected system of flattened, saclike, membranous structures inside the chloroplast.
Wavelength distance from one wave peak to the next.
Created by: adhami1
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