0
What else can I help you with?
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 water roles in the light reaction of photosynthesis?
Water is essential in the light reaction of photosynthesis as it serves as a source of electrons for photosystem II to replace those lost during electron transport. When water molecules are split in a process known as photolysis, oxygen is released, and electrons are transferred to chlorophyll in the photosystem, which initiates the electron transport chain.
Water participates directly in the light reactions of photosynthesis by?
Water participates directly in the light reactions of photosynthesis by donating electrons to photosystem II during the process of photolysis. These electrons are used to replace the ones lost by chlorophyll when it absorbs light energy, allowing the photosystem to continue absorbing light and generating ATP and NADPH for the Calvin cycle.
What are the steps of Photosystem 2?
Light energy is absorbed by chlorophyll and other pigments in the photosystem, exciting electrons. These excited electrons are passed through a series of electron carriers in the thylakoid membrane, creating a proton gradient across the membrane. The electrons ultimately replace those lost by chlorophyll through splitting water molecules, releasing oxygen as a byproduct. ATP is produced as a result of the proton gradient, which is used to power the Calvin cycle for glucose synthesis.
Where do the excited electrons flowing through photosystem you originally come from?
The excited electrons flowing through photosystem II come from water molecules that are split during the light-dependent reactions of photosynthesis. This process, known as photolysis, releases oxygen as a byproduct and provides electrons to replace those lost when chlorophyll is excited by sunlight.
Electrons from what replace the electrons from photosystem 2 during noncyclic electron flow?
water
Electrons from what replaces the electrons from photosystem 2 during noncyclic electron flow?
water
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.
Electrons form replace the electrons from photosystem 2 during noncyclic electric flow?
water
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 will happen if molecules that trap electrons replace p700 molecules and those molecules become saturated with electrons?
If molecules that trap electrons replace P700 molecules, the photosystem I in the chloroplast will not be able to efficiently perform photosynthesis. If those molecules become saturated with electrons, it can lead to a buildup of reactive oxygen species and ultimately damage the photosystem. This can disrupt the electron transport chain and decrease the overall efficiency of photosynthesis.
Where do the electron get their energy in photosystem 1?
They pass through a series of compounds to photosystem I, losing energy along the way. Photosystem I, like photosystem II, emits high-energy electrons in the light, and the electrons from photosystem II replace these. Photosystem II contains chlorophyll molecules. When a photon (quantum of light) reaches one of these chlorophyll molecules, the light energy activates an electron. This is then passed to the reaction center of the photosystem, where there are two molecules of chlorophyll P680. These pass the electrons to plastoquinone, which, like the chlorophylls, is embedded in the thylakoid membrane. The plastoquinone changes its position within the membrane, and passes the electrons to cytochromes b6 and f. At this stage the electrons part with a significant proportion of their energy, which is used to pump protons (H+) into the thylakoid lumen. These protons will later be used to generate ATP by chemiosmosis. The electrons now pass to plastocyanin, which is outside the membrane on the lumen side. Photosystem I is affected by light in much the same way as photosystem II. Chlorophyll P700 passes an activated electron to ferredoxin, which is in the stroma (the liquid outside the thylakoid). Ferredoxin in turn passes the electrons on, reducing NADP+ to NADPH + H+. Photosystem I accepts electrons from plastocyanin. So, effectively, photosystem II donates electrons to photosystem I, to replace those lost from photosystem I in sunlight. How does photosystem II recover electrons? When it loses an electron, photosystem II becomes an oxidizing agent, and splits water: 2H2O forms 4H+ + 4e- + O2. The electrons return photosystem II to its original state, and the protons add to the H+ concentration in the thylakoid lumen, for later use in chemiosmosis. The oxygen diffuses away.
What happens when a photon of light hits photosyestem ll?
When a photon of light hits photosystem II, it excites an electron in the reaction center of the photosystem. This electron is then passed along a series of proteins in the electron transport chain, creating a flow of electrons that drives ATP production through chemiosmosis. Additionally, the photon splitting water molecules into oxygen, protons, and electrons, which is essential for the plant to produce oxygen and obtain electrons to replace the excited ones.
Where do electrons for photosystem II come from?
Electrons for photosystem II come from the splitting of water molecules during the light-dependent reactions of photosynthesis. This process, known as photolysis, occurs in the thylakoid membranes of chloroplasts. The electrons released from water molecules replace those lost by chlorophyll molecules in photosystem II, allowing the photosystem to continue the electron transport chain and ultimately produce ATP and NADPH for the Calvin cycle.
What is water roles in the light reaction of photosynthesis?
Water is essential in the light reaction of photosynthesis as it serves as a source of electrons for photosystem II to replace those lost during electron transport. When water molecules are split in a process known as photolysis, oxygen is released, and electrons are transferred to chlorophyll in the photosystem, which initiates the electron transport chain.
Water participates directly in the light reactions of photosynthesis by?
Water participates directly in the light reactions of photosynthesis by donating electrons to photosystem II during the process of photolysis. These electrons are used to replace the ones lost by chlorophyll when it absorbs light energy, allowing the photosystem to continue absorbing light and generating ATP and NADPH for the Calvin cycle.
What are the steps of Photosystem 2?
Light energy is absorbed by chlorophyll and other pigments in the photosystem, exciting electrons. These excited electrons are passed through a series of electron carriers in the thylakoid membrane, creating a proton gradient across the membrane. The electrons ultimately replace those lost by chlorophyll through splitting water molecules, releasing oxygen as a byproduct. ATP is produced as a result of the proton gradient, which is used to power the Calvin cycle for glucose synthesis.
