what is water's role in the light reaction of photosynthesis?
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What Is the Role of H2O in Photosynthesis? Quick Answer. The role of H2O, or water, in photosynthesis, is essential to ATP, which is the energy process that drives photosynthesis. It is also important in the making of food; hydrogen atoms found in water make up part of the glucose molecules that plants use as nourishment. Continue Reading.
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Photosynthetic Cells Meanwhile, each chlorophyll molecule replaces its lost electron with an electron from water; this process essentially splits water molecules to produce oxygen (Figure 5). Figure 5: The light and dark reactions in the chloroplast. The chloroplast is involved in both stages of photosynthesis.
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- In the first stage, the light-dependent reaction, the chloroplast traps light energy and converts it into chemical energy contained in nicotinamide adenine dinucleotide phosphate (NADPH) and adenosine triphosphate (ATP), two molecules used in the second stage of photosynthesis.
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What Is the Complete Oxidation of Glucose? During the stage of photosynthesis referred to as the light-dependent reaction, 12 molecules of water begin the process of reacting with six molecules of carbon dioxide to produce one molecule of glucose, six molecules of oxygen and six molecules of water.
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- For plants to perform photosynthesis they require light energy from the sun, water and carbon dioxide. Water is absorbed from the soil into the cells of roots. The water passes from the root system to the xylem vessels in the stem until it reaches the leaves.
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- In the light depentent reaction. Water is broken down into  molecular oxygen and hydrogen ions. The hydrogen ions are used to  make ATP; oxgyen is release as a byproduct. So … again, oxygen is  given off in the light dependent reaction.
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Why is sunlight needed for photosynthesis? Sunlight is needed during photosynthesis, it play a very important role during the reaction. During the reaction of photosynthesis water gets converted into glucose and oxygen.The reaction requires light energy, which is absorbed by green substance called chlorophyll. Photosynthesis takes place in leaf cells.
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Why sunlight is essential for photosynthesis? Definition: Photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. It is the driving force behind most of the life on earth. Photosynthesis occurs in plants, algae, and many species of bacteria, but not in archaea.
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SAPLING CH 5 HW Choose all the events that occur during the light-dependent reactions of photosynthesis. - H+ ions are used to help produce the energy carriers, ATP and NADPH. - Excited electrons help move H+ ions to create a concentration gradient. - Light energy is used to excite electrons on specific chlorophyll molecules.
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Energy, Plants & Man Photosynthesis consists of light-dependent and light-independent reactions... as we all know, the reactants of photosynthesis are carbon-dioxide, water and light, and the products are carbohydrates and oxygen... But which reactants and which products are the components of which of the 2 reactions.... The LIGHT-DEPENDENT reaction needs LIGHT in order to split WATER, to give OXYGEN as a byproduct, and the ENERGY (in the form of ATP and NADPH) necessary for LIGHT-INDEPENDENT reaction to take action.
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MADMAN BIOLOGY The overall function of light-dependent reactions, the first stage of photosynthesis, is to convert solar energy into chemical energy in the form of NADPH and ATP, which are used in light-independent reactions and fuel the assembly of sugar molecules.
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MADMAN BIOLOGY How Light-Dependent Reactions Work. The overall function of light-dependent reactions, the first stage of photosynthesis, is to convert solar energy into chemical energy in the form of NADPH and ATP, which are used in light-independent reactions and fuel the assembly of sugar molecules.
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- (1 point) a. provides oxygen atoms b. provides electrons c. accepts electrons d. acts as a catalyst. Weegy: It b. provides electrons is the role of water in the reactions of photosynthesis.
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Photosynthesis Question? Please help? The light reactions of photosynthesis use _____ and produce _____. a) water ... NADPH b) NADPH ... oxygen c) carbon dioxide ... oxygen d) NADPH ... NADP+ e) carbon dioxide ... sugar. Update: -B and C are wrong.
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- Photosynthesis Light reaction • Uses sunlight energy directly• Occurs in thylakoid membranes• Splits water and releases Oxygen• Produces ATP and NADPH Calvin Cycle = dark reaction • Uses sunlight energy indirectly• Occurs in Stroma• Uses CO2, ATP, NADPH• Produces Glucose.
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Stroma Light-independent reactions. The light-independent reactions, or dark reactions, of photosynthesis are chemical reactions that convert carbon dioxide and other compounds into glucose. These reactions occur in the stroma, the fluid-filled area of a chloroplast outside of the thylakoid membranes.
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Photosynthesis Water molecules are also produced during the chemical stage of photosynthesis as the following complete equation reveals: 6 CO₂ + 12 H₂O + light --> C₆H₁₂O₆ + 6 H₂O + 6 O₂ Water molecules are present on the reagent side as well on the product side of the equation.
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Why Is Photosynthesis Important? Photosynthesis is the conversion of carbon dioxide and water into carbohydrates using energy from sunlight. It is the main process by which new energy becomes available to life on Earth. Plants and algae use photosynthesis to convert light energy into a form available to other organisms, and thus form the base of almost every food chain.
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Light-dependent reactions Light-dependent reactions. In photosynthesis, the light-dependent reaction takes place on the thylakoid membranes. The inside of the thylakoid membrane is called the lumen, and outside the thylakoid membrane is the stroma, where the light-independent reactions take place.
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Biology Unit 4 Make sure to use the words photosystem II, water, electron transport chain, photosystem I, NADPH, and ATP synthase. -In light-dependent reactions chlorophyll in photosystem II (collection of pigments) is excited. When this happens, water is split and electrons replace excited electrons. Then, oxygen is released into the environment. The excited electron moves down the electron transport chain.
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- The water compartment inside the thylakoid membrane is called the lumen. The water area outside of the thylakoid, but still within the chloroplast, is the stroma. Photosynthesis occurs in two sets of reactions that are linked by electron carrier molecules (NADP + /NADPH) and ADP/ATP. The two reactions go by several names.
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Light-dependent reactions Light-dependent reactions. Light-dependent reactions of photosynthesis at the thylakoid membrane. In photosynthesis, the light-dependent reaction takes place on the thylakoid membranes. The inside of the thylakoid membrane is called the lumen, and outside the thylakoid membrane is the stroma, where the light-independent reactions take place.
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What happens in the light reactions of photosynthesis? Confidence votes 30. light strikes photosystem 2, exciting the electrons. The electron come from a water molecule that has been split into hydrogen and oxygen. That is the first reactant (water), and Oxygen gas is given off as the first product.
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Photosynthesis ​Photosynthesis occurs in two stages, which are shown in Figure below. 1  Stage I is called the light reactions. This stage uses water and changes light energy from the sun into chemical energy stored in ATP and NADPH (another energy-carrying molecule). 2  Stage II is called the Calvin cycle.
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Photosynthesis for Kids During these reactions light energy is converted to chemical energy. Chlorophyll and other pigments absorb energy from sunlight. This energy is transferred to the photosystems responsible for photosynthesis. Water is used to provide electrons and hydrogen ions but also produces oxygen.