dark reaction


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Related to dark reaction: Calvin cycle, photosynthesis

dark re·ac·tion

in photosynthesis, the fixation of CO2 into carbohydrate, which is independent in place and time of the absorption of light.
Farlex Partner Medical Dictionary © Farlex 2012

dark reaction

n.
Any of the chemical reactions that take place as part of the second stage of photosynthesis and do not require light to occur, by which energy released from ATP drives the production of organic molecules from carbon dioxide.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
References in periodicals archive ?
The low concentration of oxygen during dark reactions adversely affected the current and power density.
Once produced, these energy-rich compounds must then migrate to the energy transfer point in the leaf and release their energy to drive the light-independent reactions or dark reaction in the chloroplast stoma to convert carbon dioxide into glucose through a complex series of reactions that all first-year biology students learn as the Calvin Benson cycle.
"We've been able to separate the light reaction from the dark reaction and instead of using biological photosynthesis, we are using solar panels to convert the sunlight to electrical energy, then to a chemical intermediate, and using that to power carbon dioxide fixation to produce the fuel," Liao said.
Also, dark reaction kinetics was accounted using a different kinetic expression for the rate of reaction, obtained by setting the initiation rate constant equal to zero in Eq.