what is the difference between light and dark reaction in photosynthesis?
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The main difference between light and dark reaction is that light reaction is the first stage of photosynthesis, which traps light energy in order to produce ATP and NADPH whereas dark reaction is the second stage of photosynthesis, which produces glucose by using the energy form ATP and NADPH produced from the light ...
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The process of photosynthesis is considered as an oxidation-reduction reaction activated by light absorbed by chlorophyll or certain other substances (e.g., phycocyanin, fucoxanthol), resulting in the evolution of oxygen from water and in the formation of reduced carbon compounds (e.g., carbohydrate) from carbon ...
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In photosynthesis, cells use the energy in sunlight to change water and carbon dioxide into glucose (C6H12O6) and oxygen (O2). ... A dehydration reaction occurs when molecules combine to form a single, larger molecule and also a molecule of water.
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Calvin Cycle (Dark Reaction) — Equation & Steps. During the Calvin cycle of photosynthesis, the plant uses carbon dioxide with the ATP and NADPH from the light-dependent reactions to produce glucose.
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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.
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Plants go through a process known as photosynthesis. Photosynthesis can be thought of as the opposite process of cellular respiration. Through two processes known as the light reactions and the dark reactions, plants have the ability to absorb and utilize the energy in sunlight.
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During light reactions phosphate is added to ADP to produce ATP. The process is called Phosphorylation. Dark phase = The Calvin Cycle – is the making of Glucose from CO2. It can operate in darkness but utilizes the products of light phase, NADPH and ATP to reduce CO2 into Glucose.
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The dark reaction occurs outside of the thylakoids. In this reaction, the energy from ATP and NADPH are used to fix carbon dioxide (CO2). The products of this reaction are sugar molecules and other organic molecules necessary for cell function and metabolism.
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Photosynthesis takes carbon dioxide and combines it with water, enabled by radiant energy, usually from the sun. The end result is glucose, with oxygen being the waste product. The two processes are similar in that they both produce energy, albeit in two different forms.
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What are the differences between chemosynthesis and photosynthesis? Both photosynthesis and chemosynthesis are reactions that use energy, but the energy source is different. ... In photosynthesis, water is needed to fuel the process; in chemosynthesis, water is an end result of the process.
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2 replies. In photosynthesis process, light breaks water molecules by stripping water of an electron. This reaction frees both water molecules. Oxygen reacts with another free oxygen to form oxygen diatomic (O2).
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Oxygenic photosynthesis is composed of two stages: the light-dependent reactions and the light-independent reactions. The light-independent reactions use the ATP and NADPH from the light-dependent reactions to reduce carbon dioxide and convert the energy to the chemical bond energy in carbohydrates such as glucose.
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During the light reaction in photosynthesis, oxygen is released as by product by absorbing light energy by chlorophylls. Source of this oxygen is water. Water splits into hydrogen and hydroxyl ions. The hydroxyl ions released oxygen.
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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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The light reactions are the steps of photosynthesis that convert solar energy to chemical energy. Light absorbed by chlorophyll drives a transfer of electrons and hydrogen from water to an acceptor called NADP+ (nicotin-amide adenine dinucleotide phosphate), which temporarily stores the energized electrons.
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The process of photosynthesis occurs when green plants use the energy of light to convert carbon dioxide (CO2) and water (H2O) into carbohydrates. Light energy is absorbed by chlorophyll, a photosynthetic pigment of the plant, while air containing carbon dioxide and oxygen enters the plant through the leaf stomata.
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ATP and NADPH are the main product of the Light reactions of photosynthesis. ... ATP provides the free energy to power the Calvin Cycle (a.k.a. the Dark reactions). NADPH is the key electron donor (reducing agent). This provides the hydrogen and electrons needed to combine carbon dioxide into carbohydrate molecules.