★ Light dependent reaction.
In the light dependent reactions, chlorophyll converts sunlight energy into chemical energy (ATP and NADPH)
2 H2O + 2 NADP+ + 3 ADP + 3 Pi + light → 2 NADPH + 2 H+ + 3 ATP + O2
Light is then captured by pigments in chlorophyll.
Various pigments:
Chlorophyll - absorbs violet, blue and red light. (reflects green)
Carotenoids - absorb blue and green light. (reflect yellow, orange, or red)
Various pigments:
Chlorophyll - absorbs violet, blue and red light. (reflects green)
Carotenoids - absorb blue and green light. (reflect yellow, orange, or red)
Phycocyanins - absorb green and yellow light. (reflect blue or purple)
Xanthophyll - type of carotenoid that reflects yellow light.
Xanthophyll - type of carotenoid that reflects yellow light.
★ Light-independent reactions. (The calvin cycle)
In the light-independent reaction, the ATP and NADPH produced by the light-dependent reaction provides the energy to make glucose and other organic molecules from inorganic carbon dioxide and water .
6CO2 + 18ATP + 12NADPH2 → C6H12O6 (glucose) + 12 NADP+ + 18 ADP + 18 Pi + 6 H2O
★ ATP: Adenosine Triphosphate
★ NADPH: Nicotinamide adenine dinucleotide phosphate
A video to let you know more about The Calvin Cycle.
Source from: http://www.biologycorner.com/bio4/notes/photosynthesis.html
hi (: your information is very useful but i dont understand both of the equation, could you explain it? thanks ^^
ReplyDeleteIn light dependent reaction, (occuring only in the presence of light) the reaction takes place in the chloroplast in which energy captured from light leads to the formation of ATP and NADPH.
ReplyDeleteIn light independent reaction, the second stage of photosynthesis, (not requiring light to occur) energy released from ATP drives the production of organic molecules from carbon dioxide.