Question

describe PS-1 and PS-2 in green plants.How is photosystem helpful in production of ATP and NADPH2​

Answer 1

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The Light Reactions of Photosynthesis. Light is absorbed and the energy is used to drive electrons from water to generate NADPH and to drive protons across a membrane. These protons return through ATP synthase to make ATP.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.Photosynthesis is the process in which light energy is converted to chemical energy in the form of sugars. In a process driven by light energy, glucose molecules (or other sugars) are constructed from water and carbon dioxide, and oxygen is released als a byproduct.

Photosystem I is located on the outer surface of the thylakoid membrane and is bind to the special reaction center known as P700, whereas PS II is located on the inner surface of the thylakoid membrane and the reaction center is known as P680.