light reactions The photosynthetic process in which solar energy is harvested and transferred into the chemical bonds of ATP; can occur only in light. PICTURE ...
light reactions
The steps in photosynthesis that occur on the thylakoid membranes of the chloroplast and convert solar energy to the chemical energy of ATP and NADPH, evolving oxygen in the process.
lignin ...
Light reactions In chloroplasts, the reactions in which light is used to create reducing potential and to generate oxygen.
Light reactions
Calvin cycle ("dark reactions")
Plant cells
Polyploidy
The Proteasome
Protein Kinesis: How freshly-synthesized proteins are sent to their proper destinations in the cell
Reporter genes
Ribosomes
Second messengers ...
The light reactions of photosynthesis occur in the grana (thylakoid membranes) of the chloroplasts of eukaryotic cells.
In the light reactions, one molecule of the pigment chlorophyll absorbs one photon and loses one electron.
In the light reactions, electrons move one way from water to NADPH and the energy of sunlight is used to produce ATP.
Calvin Cycle (Light-independent Reactions) ...
The first process is the Light Dependent Process (Light Reactions), requires the direct energy of light to make energy carrier molecules that are used in the second process.
Problem 6: Events during light reactions
What three events occur during the light reactions of photosynthesis? A reduction of oxygen, oxidation of NADPH, formation of ATP
B oxidation of water, reduction of NADP+ , formation of ATP ...
Hill reaction The splitting of a molecule of water during the light reactions of photosynthesis; the photolysis of water.
hilum Scar on a seed indicating where it was attached to the ovary.
experimental observation that the photosynthetic efficiency of monochromatic light is greatly reduced above 680 nm, even though chlorophyll absorbs well up to 700 nm. Led to the discovery of the two light reactions of photosynthesis.
 See also: Photosynthesis, Plant, Trans, Molecule, Oxygen
  
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