Biology, asked by Serfisarfaraz, 1 year ago

about photosynthesis light reaction and dark reaction

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Answered by rudeawakening
2
mechanism of photosynthesis consist of two phases namely light reaction and dark reaction

# LIGHT REACTION

-takes place in grana 
- absorption of sunlight by chlorophyll molecules
-energy from electrons is used to form ATP. this is called Electron transport chain
-splitting of water molecules into H n O 
- formation of ATP from ADP 
- formation of NADPH ( reduced nitonamide adenine dmucleotide phosphate)

#DARK REACTION
 
-takes place in stroma
- CO2 enters the reaction in reaction 
-reduction of CO2 takes place into carbohydrates
- hydrogen is taken from NADPH
- energy is used from ATP
-process of fixation of CO2 called calvin's cycle.
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