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What is split during the light reactions of photosynthesis?

During Light reactions of Photosynthesis, the chlorophyll will be activated by light. This light activated chlorophyll will split the water molecule. This process is called Photolysis. Water molecule is split to release H+ ions and also oxygen.

What is the role of water in the light reactions of photosynthesis?

In the process of photosynthesis, water provides the electron that binds the hydrogen atom (of a water molecule) to the carbon (of carbon dioxide) to give sugar (glucose). Water acts as a reducing agent by providing H+ ions that convert NADP to NADPH.

What is produced when water is split?

Water splitting is the chemical reaction in which water is broken down into oxygen and hydrogen: 2 H2O → 2 H2 + O. Efficient and economical water splitting would be a technological breakthrough that could underpin a hydrogen economy, based on green hydrogen.

What is the purpose of water splitting?

Water splitting is the process in which water decomposes into hydrogen and oxygen. Doing so by passing an electric current through water is called the electrolysis of water.

What are the two roles of water in the light dependent reaction?

In photosynthesis, a light-dependent reaction uses light energy from the sun to split water which has been taken in by the organism. Water, when split, gives oxygen, hydrogen, and electrons. These electrons move through structures in chloroplasts and, by chemiosmosis, make ATP.

Where do electrons come from for photosystem I and II during the light reactions?

The photosystem II (PSII) reaction center and the photosystem I (PSI). In the photosystem II (PSII) reaction center, energy from sunlight is used to extract electrons from water. The electrons travel through the chloroplast electron transport chain to photosystem I (PSI), which reduces NADP+ to NADPH.

Why is it called the light-independent reaction?

These reactions are also called the light-independent reactions because they are not directly driven by light. In the Calvin cycle, carbon atoms from CO2​start text, C, O, end text, start subscript, 2, end subscript are fixed (incorporated into organic molecules) and used to build three-carbon sugars.