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What do the terms P680 and P700 mean in science?
P680 and P700 refer to the specific wavelengths of light that are absorbed by Photosystem II (P680) and Photosystem I (P700) in the process of photosynthesis. These numbers represent the particular chlorophyll molecule's absorption peaks in each photosystem.
What wavelengths do photosystems I and II prefer?
The photosystems are named after the wavelength for which they are the most reactive. Photosystem II is P680 which means that it has the highest reavtivity when light that is 680 nanometers (nm) hits it. Photosystem I works off the same principle; however, it is named P700 because the optimal wavelength for it is 700 nm.
Do plants have adaptations that maximise light absorbsion?
One of the main adaptions is the range of pigments that absorb the light in plants. From the standard P680 and P700 pigments ( named for the absorption spectrum, in nanometers, they pick up in ) in the two photosystems to many different pigments in the array of pigments surrounding the reaction center. These pigments absorb light outside the red and blue range and they become visible when the leaves of plants turn colors in the fall.
What special pigment do plant cells contain?
Chlorophyll in the chloroplasts and other accesory pigments (p680 in PSII and p700 in PSI)
What compound is found at the reaction center of a photo system?
Chlorophyll is the compound found at the reaction center of a photosystem in plants and other photosynthetic organisms. It is responsible for absorbing light energy and initiating the process of photosynthesis.
What is the energy that excites p680 and p700 is supplied by what?
The energy that excites P680 and P700 in photosystem II and photosystem I respectively is supplied by sunlight. More specifically, it is the photons of light energy absorbed by chlorophyll molecules within these photosystems that excites the electrons in P680 and P700 to higher energy states, initiating the process of photosynthesis.
How can plants capture light?
P680 in photosystem 2 and P700 in photosystem1, respectively.
What do the terms P680 and P700 mean in science?
P680 and P700 refer to the specific wavelengths of light that are absorbed by Photosystem II (P680) and Photosystem I (P700) in the process of photosynthesis. These numbers represent the particular chlorophyll molecule's absorption peaks in each photosystem.
What wavelengths do photosystems I and II prefer?
The photosystems are named after the wavelength for which they are the most reactive. Photosystem II is P680 which means that it has the highest reavtivity when light that is 680 nanometers (nm) hits it. Photosystem I works off the same principle; however, it is named P700 because the optimal wavelength for it is 700 nm.
What splits water?
which photosystem (p680or P700) splits water? P680
Do plants have adaptations that maximise light absorbsion?
One of the main adaptions is the range of pigments that absorb the light in plants. From the standard P680 and P700 pigments ( named for the absorption spectrum, in nanometers, they pick up in ) in the two photosystems to many different pigments in the array of pigments surrounding the reaction center. These pigments absorb light outside the red and blue range and they become visible when the leaves of plants turn colors in the fall.
What special pigment do plant cells contain?
Chlorophyll in the chloroplasts and other accesory pigments (p680 in PSII and p700 in PSI)
What photosystem splits water?
which photosystem (p680or P700) splits water? P680
What compound is found at the reaction center of a photo system?
Chlorophyll is the compound found at the reaction center of a photosystem in plants and other photosynthetic organisms. It is responsible for absorbing light energy and initiating the process of photosynthesis.
What are photosystems made of?
Photosystems are made of protein complexes and pigments, particularly chlorophyll molecules. These components work together to capture and convert light energy into chemical energy during the process of photosynthesis. Additionally, photosystems are located in the thylakoid membranes of chloroplasts in plant cells.
Describe what a photo-system does for photosynthesis?
* Light is absorbed by the antenna pigments of photosystems II and I. * The absorbed energy is transferred to the reaction center chlorophylls, P680 in photosystem II, P700 in photosystem I. * Absorption of 1 photon of light by Photosystem II removes 1 electron from P680. * With its resulting positive charge, P680 is sufficiently electronegative that it can remove 1 electron from a molecule of water. * When these steps have occurred 4 times, requiring 2 molecules of water, 1 molecule of oxygen and 4 protons (H+) are released * The electrons are transferred (by way of plastoquinone - PQ in the figure) to the cytochrome b6/f complex where they provide the energy for chemiosmosis. * Activation of P700 in photosystem I enables it to pick up electrons from the cytochrome b6/f complex (by way of plastocyanin - PC in the figure) and raise them to a sufficiently high redox potential that, after passing through ferredoxin(Fd in the figure), * they can reduce NADP+ to NADPH. The sawtooth shifts in redox potential as electrons pass from P680 to NADP+ have caused this system to be called the Z-Scheme(although as I have drawn the diagram, it looks more like an "N"). It is also called noncyclic photophosphorylation because it produces ATP in a one-way process
What is the function of a thykaloid membrane?
The thylakoid membrane is where the light-dependent reactions of photosynthesis take place in plant cells. This membrane contains chlorophyll and other pigments that capture light energy and convert it into chemical energy in the form of ATP and NADPH. It also houses the protein complexes involved in the electron transport chain, which generates the energy needed to produce glucose during photosynthesis.
