oxygen
The light reaction of photosynthesis includes the light-dependent reactions: photon absorption by chlorophyll, water splitting, electron transport chain, and the production of ATP and NADPH.
Photosynthesis can be divided into two part: light reaction is the first stage of photosynthesis, occurring only in the presence of light, during which energy captured from light drives the production of ATP. dark reaction is the second stage of photosynthesis, not requiring light to occur, and during which energy released from ATP drives the production of organic molecules from carbon dioxide.
why light reaction of photosynthesis is essential before the dark reaction can procced?
The light reaction in photosynthesis is initiated by the absorption of light by chlorophyll molecules in the thylakoid membranes of chloroplasts. This light energy is then used to split water molecules into oxygen, protons, and electrons, which kickstarts the process of energy production in the form of ATP and NADPH.
Well as the word equation for the photosynthesis reaction states that:Carbon dioxide + Water (in the presence of light energy) → Glucose + OxygenIn other words, the compound that is formed at the end of the reaction is glucose and oxygen. Balanced equation to represent photosynthesis: 6CO2 + 6H2O (+light energy)--------> C6H12O6 + 6O2
The heat content of the reaction in photosynthesis where a glucose molecule is formed is endothermic, meaning energy is absorbed. This is because sunlight is absorbed during the light-dependent reactions to produce ATP and NADPH, which are then used in the light-independent reactions to form glucose. Overall, photosynthesis is an energy-storing process.
A.T.P. and N.A.D.H are formed during light reaction.
light reaction and dark reaction
The two reactions which occur during photosynthesis are light reaction and dark reaction. Light reaction takes place only in the presence of light. Dark reaction can occur with or without light.
Light allows photosynthesis to occur. Therefore more light=faster reaction.
Water is the molecule that is split during the light reaction of photosynthesis when releasing oxygen.
6CO2+6H2O+light energy-->C6H12O6+6O2 Chemical reaction of Photosynthesis