what is the photosystem 1 and 2?
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The primary function of the photosystem I is in NADPH synthesis, where it receives the electrons from PS II. The primary function of the photosystem II is in the hydrolysis of water and ATP synthesis. The PSI is made up of two subunits which are psaA and psaB.
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Photosystem I or PS I and Photosystem II or PS II are the protein-mediated complex, and the main aim is to produce energy (ATP and NADPH2), which is used in Calvin cycle, the PSI uses light energy to convert NADP+ to NADPH2.
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The first stage of photosynthesis is called the light reactions. During this stage, light is absorbed and transformed to chemical energy in the bonds of NADPH and ATP.
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The chloroplast is involved in both stages of photosynthesis. The light reactions take place in the thylakoid. There, water (H2O) is oxidized, and oxygen (O2) is released. The electrons that freed from the water are transferred to ATP and NADPH.
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Photosynthetic cells contain special pigments that absorb light energy. ... In plants, photosynthesis takes place in chloroplasts, which contain the chlorophyll. Chloroplasts are surrounded by a double membrane and contain a third inner membrane, called the thylakoid membrane, that forms long folds within the organelle.
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Photosystem I is an integral membrane protein complex that uses light energy to catalyze the transfer of electrons across the thylakoid membrane from plastocyanin to ferredoxin. Ultimately, the electrons that are transferred by Photosystem I are used to produce the high energy carrier NADPH.
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Photosynthesis in the leaves of plants involves many steps, but it can be divided into two stages: the light-dependent reactions and the Calvin cycle. The light-dependent reactions take place in the thylakoid membrane and require a continuous supply of light energy.
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Photosynthesis takes place in two sequential stages: The light-dependent reactions; The light-independent reactions, or Calvin Cycle.
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['In photosynthesis, oxygen, carbon dioxide, ATP, and NADPH are reactants. ... ', 'In photosynthesis, chlorophyll, water, and carbon dioxide are reactants. ... ', 'In photosynthesis, water, carbon dioxide, ATP, and NADPH are reactants. ... ', 'In photosynthesis, water and carbon dioxide are reactants.']
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When viewed as a whole, the photosynthetic process utilizes 12 water molecules, six carbon dioxide molecules and light energy to produce one glucose molecule, six water molecules and six oxygen molecules. This can be represented by the following chemical equation: 12H20 + 6CO2 + light energy = C6H12O6 + 6H2O + 6O2.
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Photosynthesis consists of both light-dependent reactions and light-independent reactions. In plants, the so-called "light" reactions occur within the chloroplast thylakoids, where the aforementioned chlorophyll pigments reside.
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['Photosynthesis and respiration are similar in that they both produce ATP via an electron transport chain , chemiosmosis and ATP synthase .', 'In photosynthesis, ATP is produced in the light reactions by photophosphorylation through an electron transport chain , chemiosmosis and ATP synthase in chloroplasts .']
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During the process of photosynthesis, we obtain, C6H12O6 (glucose) as the main product and oxygen as the byproduct. This process has two reactions: light reaction and dark reaction. hydrogen, protons, electrons, assimilatory powers(ATP and NADPH) are produced and oxygen is evolved.
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Photosynthesis is the process by which green plants, algae and some forms of bacteria use energy from sunlight to convert carbon dioxide and water into glucose. Six molecules of carbon dioxide and twelve molecules of water, are consumed, while glucose, six molecules of oxygen and six molecules of water are produced.
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Briefly describe the 2 phases of photosynthesis. Light-dependent reactions: light energy is absorbed and then converted into chemical energy, in the form of ATP and NADPH. Light-independent reactions: with the ATP and NADPH that were formed in light-dependent reactions is used to make glucose.
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Photosynthesis begins when light strikes Photosystem I pigments and excites their electrons. The energy passes rapidly from molecule to molecule until it reaches a special chlorophyll molecule called P700, so named because it absorbs light in the red region of the spectrum at wavelengths of 700 nanometers.
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The light reactions use light energy to produce ATP and NADPH. The molecules that function in the light reactions are built into the thylakoid membrane. This equipment includes two complexes called photosystem I (PSI) and photosystem II (PSII). ... Together, PSI and PSII move electrons from water to NADP+, forming NADPH.