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Chapter 11
Phototrophic Energy Metabolism: Photosynthesis
8
Biology
Undergraduate 3
10/16/2011

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Term
phototrophs
Definition
organisms that convert solar energy to chemical energy in the form of ATP and the reduced coenzyme NADPH
Term
NADPH
Definition
electron and hydrogen carrier for a large number of anabolic pathways and is closely related to NADH
Term
photoheterotrophs
Definition
organisms that acquire energy from sunlight but depend on organic sources of reduced carbon
Term
photoautotrophs
Definition
organisms that use solar energy to synthesize energy-rich organic molecules from simple inorganic starting materials such as CO2 and water
Term
energy transduction reactions
Definition
light energy is captured by chlorophyll molecules and converted to chemical energy in the form of ATP and NADPH. the ATP and NADOH generated byt he energy transduction reactions subsequently provide energy and reducing power
Term
carbon assimilation reactions
Definition
also known as carbon fixation reactions. known as the calvin cycle. fully oxidized carbon atoms from carbon dioxide are fixed (reduced and covalently joined), forming carbohydrates
Term
energy transduction
Definition
include light harvesting, electron transport to NADPH with simultaneous proton pumping and ATP synthesis
Term
carbon assimilation
Definition
includes the calvin cycle and starch biosynthesis in the chloroplast stroma, plus sucrose biosynthesis in the cytosol
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