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In the light reaction what is the electron donor where do the electrons end up?
Wiki User
∙ 14y ago
water donates the electrons when H2O is separated into 2 hydrogen and one oxygen by the water-splitting enzyme in photosystem II. The electrons then enter the electron transport chain, entering a hydrogen pump which uses energy to push hydrogen into the thylocoid. Electrons get recharged in the next chlorophyll almost like a battery, finally they combine with NADP+ and a hydrogen to create NADPH.
btw, two electrons are donated per H2O molecule
Wiki User
∙ 14y ago
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What happens to electrons when pigments in photosystem II absorbs light?
they move through an electron transport chain to photosystem 1
What is the purpose of light reactions?
it includes the passage of electrons along electron transport chain and produces NADPH and oxygen, and the synthesis of ATP. it includes the passage of electrons along electron transport chain and produces NADPH and oxygen, and the synthesis of ATP.
What is the role of the plastocyanin?
Plastocyanin is the electron carrier molecule in the light-dependent reaction in photosynthesis.
Where do electrons get their energy in the light reactions.?
.From photons in solar energy
What type of microscope uses electrons instead of light and lenses to magnify cells?
Transmission Electron Microscope
What does the ETC do in plants?
Photosynthetic ETC takes place in thylakoid membranes membranes in chloroplast. Like ETC in mitochondria, light reaction in photosynthesis transport electrons across the photosystems. This yields high energy electron donor, NADPH (unlike in oxidative phosporylation where electrons are transferred from electron donor NADH)
Where do electrons get their energy light reactions?
.From photons in solar energy
What molecule acts as an electron donor the light reactions of photosynthesis?
H2o
. What molecule acts as an electron donor in the light reactions of photosynthesis?
H2o
What is the waters role in the light reaction of photosynthesis?
Water is split to have its electrons replace the excited electron of chlorophyll, then enters photosystem II.
What is waters role in the light reaction of photosynthesis?
Water is split to have its electrons replace the excited electron of chlorophyll, then enters photosystem II.
How does an electron microscope differs from a light microscope?
The light microscope use the visible light; the electron microscope use an electrons beam.
What does a plant do with a water?
When the light cascade finally releases the P680 electrons to the primary electron acceptor of the reaction complex those electrons must be replaced. The plant has an enzyme that preforms photolysis on water, splitting it, so that two electrons are fed one at a time into the p680 chlorophylls as replacement electrons for those they have released to the primary electron acceptor.
What source of electrons is for the light reaction?
H20
What is the balanced equation for photosnthesis?
The general equation for photosynthesis is:2n CO2 + 2n DH2 + photons ----> 2(CH2O)n + 2n DO orCarbon dioxide + electron donor + light energy -------> carbohydrate + oxidized electron donor
What happens after the reaction center receives energy from molecules in the light harvesting complex?
It passes the energy to the reaction center ( a specialized region of photosystem) then the energized electrons leave the reaction centers and are passed to adjacent electron transport chains (ETC)
What is a Transmission electrons?
a transmission electron microscope uses electron beams rather than light.
