https://wikimd.org/index.php?action=history&feed=atom&title=Light_reaction Light reaction - Revision history 2026-04-25T17:15:20Z Revision history for this page on the wiki MediaWiki 1.44.2 https://wikimd.org/index.php?title=Light_reaction&diff=6512196&oldid=prev Prab: CSV import 2025-03-17T17:26:05Z <p>CSV import</p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 17:26, 17 March 2025</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l36">Line 36:</td> <td colspan="2" class="diff-lineno">Line 36:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{Biochemistry-stub}}</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{Biochemistry-stub}}</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{No image}}</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{No image}}</div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; 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font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">{{No image}}</ins></div></td></tr> </table> Prab https://wikimd.org/index.php?title=Light_reaction&diff=5358540&oldid=prev Prab: CSV import 2024-03-04T05:23:12Z <p>CSV import</p> <p><b>New page</b></p><div>&#039;&#039;&#039;Light Reaction&#039;&#039;&#039;<br /> <br /> The &#039;&#039;&#039;[[Light Reaction]]&#039;&#039;&#039; or &#039;&#039;&#039;[[Light-dependent Reactions]]&#039;&#039;&#039; is the first stage of [[photosynthesis]], the process by which plants, some bacteria, and some protistans use the energy from sunlight to produce sugar. This process converts light energy into chemical energy, which is stored in the bonds of sugar molecules.<br /> <br /> == Overview ==<br /> <br /> The light-dependent reactions take place in the [[thylakoid membrane]] in the [[chloroplast]]. They use light energy to make two molecules needed for the next stage of photosynthesis: the energy storage molecule [[adenosine triphosphate]] (ATP) and the reduced electron carrier [[nicotinamide adenine dinucleotide phosphate]] (NADPH). <br /> <br /> == Process ==<br /> <br /> The process of light reaction can be divided into two systems: [[Photosystem I]] and [[Photosystem II]]. <br /> <br /> === Photosystem II ===<br /> <br /> In Photosystem II, the absorption of light photons by a light-harvesting complex helps charge separation. The excited electrons lost from the reaction center P680 of PSII are replaced by electrons derived from water. The splitting of water is associated with the [[Photolysis|photolysis]] of water.<br /> <br /> === Photosystem I ===<br /> <br /> In Photosystem I, the electrons are used to reduce NADP+ to NADPH. The energy for this comes from the second phase of the photophosphorylation (light reaction).<br /> <br /> == Significance ==<br /> <br /> The light reactions provide the energy required for the [[Calvin Cycle]], which assembles sugar molecules using CO2 and the energy-rich products of the light-dependent reactions.<br /> <br /> == See also ==<br /> <br /> * [[Photosynthesis]]<br /> * [[Calvin Cycle]]<br /> * [[Chlorophyll]]<br /> * [[Photophosphorylation]]<br /> <br /> [[Category:Photosynthesis]]<br /> [[Category:Cellular respiration]]<br /> [[Category:Biochemistry]]<br /> {{Photosynthesis}}<br /> {{Biochemistry-stub}}</div> Prab