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What is produce when water molecules are split to produce the electrons needed to replace those lost by photo system 2 during photosynthesis?
Wiki User
∙ 12y ago
Oxygen and H+
the overall equation is,
2H2O ----> O2 + 4H+ + 4electrons
electrons as you know are taken up by PSII, H+ go on to form NADPH by combining with NADP+ at the end of PSI and O2 is a by product of photosynthesis
Wiki User
∙ 12y ago
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What has to happen to replace the electrons released by chlorophyll?
Electrons are replaced with splitting water when light strikes chlorophyll.
What is the role of water in the light reactions of photosynthesis?
Photosynthesis splits water to liberate O2 and fixes CO2 into sugar Water is split to have it's electrons replace the excited electron of chlorophyll the enters photosystem II.
Explain why water is essential for the light reaction?
Water is essential for Light DEPENDANT reactions, because the plant needs the hydrogen ions from the H20 to perform photosynthesis.
What do plants use during photosynthesis?
Photosynthesis is the process in which plants changes energy from the sun into chemical energy. That being said, photons from the sun are absorbed in the plants chloroplasts. These photons excite electrons that are present in the interior of the chloroplast. Electrons are located inside complexes known as photosystems, which are located in the membrane of thylakoids. Thylakoids are flattened sacs that are stacked together within the chloroplasts to form granum. When these electrons are excited they are passed on from Photosystem II to Photosystem I in a complex process that allows H+ ions to cross into the thylakoid. As the electrons are used up at each Photosystem they have to be replaced. This is where water comes in. Water gets "Split" apart and the electrons from water are donated to the Photosystem. So during photosynthesis plants use sunlight, water (to replace electrons), and NADP+ (this is an electron carrier that carries electrons to different cycles).
What happens to water in the light-dependent reactions?
Water is broken apart to release oxygen (O2), which is a product of photosynthesis, and two hydrogen ions. The electrons are taken from the hydrogens to form hydrogen ions (H+). The electrons replace those lost in the chlorophyll when it absorbed a photon of light and was sent to transfer the high energy to make ATP.
When water molecules are split to produce the electrons needed to replace those lost by photo system 2 during photosynthesis what is produced?
Oxygen and H+ the overall equation is, 2H2O ----> O2 + 4H+ + 4electrons electrons as you know are taken up by PSII, H+ go on to form NADPH by combining with NADP+ at the end of PSI and O2 is a by product of photosynthesis
What will happen if molecules that trap electrons replace p700 molecules and those molecules become saturated with electrons?
you will die o.O
What has to happen to replace the electrons released by chlorophyll?
Electrons are replaced with splitting water when light strikes chlorophyll.
What is the waters role in the reaction of photosynthesis?
Water is split to have its electrons replace the excited electron of chlorophyll, then enters photosystem II.
What did some early cells need to to do so the oxygen they produce could replace the poisonous atmosphere of the earth?
photosynthesis
Electrons that chlorophyll loses to the electron transport chain are replenished by what molecules?
Water molecules. The water is split and electrons from it are used to replace the electrons in the chlorophyll pigment.
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.
What is the function of water in photosynthesis?
In order to successfully answer this question, we need to establish the symbol equation for photosynthesis: 6CO2 + 6H2O ------ C6H12O6 + 6O2 carbon dioxide + water (go to) glucose + oxygen Water is necessary to balance this equation, and to provide the hydrogen that is required for the energy.
What is the role of water in the light reactions of photosynthesis?
Photosynthesis splits water to liberate O2 and fixes CO2 into sugar Water is split to have it's electrons replace the excited electron of chlorophyll the enters photosystem II.
What converts sunlight into sugars?
Photosynthesis that is where The energy-fixing reaction of photosynthesis begins when light is absorbed in photosystem II in the thylakoid membranes. The energy of the sunlight, captured in the P680 reaction center, activates electrons to jump out of the chlorophyll molecules in the reaction center. These electrons pass through a series of cytochromes in the nearby electron-transport system. After passing through the electron transport system, the energy-rich electrons eventually enter photosystem 1. Some of the energy of the electron is lost as the electron moves along the chain of acceptors, but a portion of the energy pumps protons across the thylakoid membrane, and this pumping sets up the potential for chemiosmosis. The spent electrons from P680 enter the P700 reaction center in photosystem I. Sunlight now activates the electrons, which receive a second boost out of the chlorophyll molecules. There they reach a high energy level. Now the electrons progress through a second electron transport system, but this time there is no proton pumping. Rather, the energy reduces NADP. This reduction occurs as two electrons join NADP and energize the molecule. Because NADP acquires two negatively charged electrons, it attracts two positively charged protons to balance the charges. Consequently, the NADP molecule is reduced to NADPH, a molecule that contains much energy. Because electrons have flowed out of the P680 reaction center, the chlorophyll molecules are left without a certain number of electrons. Electrons secured from water molecules replace these electrons. Each split water molecule releases two electrons that enter the chlorophyll molecules to replace those lost. The split water molecules also release two protons that enter the cytoplasm near the thylakoid and are available to increase the chemiosmotic gradient.
What is the source of the oxygen that is given off the plants as waste?
The water they split to replace the electrons lost to photosystem II from the electron excitation of chlorophyll by photons of light.
