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What is the overall function of photosystem 2?
Photosystem II (PSII) is a membrane protein complex which functions to catalyze light-induced water oxidation in oxygenic photosynthesis.
What is the role of light in photosynthesis Class 10?
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.
What is needed in photosystem 2?
Photosystem II obtains replacement electrons from water molecules, resulting in their split into hydrogen ions (H+) and oxygen atoms. ATP provides the energy and NADPH provides the hydrogen atoms needed to drive the subsequent photosynthetic dark reaction, or Calvin cycle.
What are the role of light in photosynthesis?
Light provides energy for the synthesis of glucose from carbon dioxide and water during photosynthesis. During light reaction, the chlorophyll entraps light and the solar energy is converted into chemical energy in the form of ATP molecules. This can happen because light energy is used to split water.
What is the role of light in photosynthetic process?
What is the reaction between photosystem I and photosystem II?
One part of the reaction is the reduction of NADP+ to NADPH, carried out by photosystem I (PSI). The second part of the reaction is the oxidation of water to produce oxygen, carried out by photosystem II (PSII). Both photosystems carry out redox (electron transfer) reactions.
What is the wavelength of light in photosystem II?
In photosystem II, as in photosystem I, the absorption of light by chlo-rophyll in the reaction center produces an excited state of chlorophyll. The wavelength of light is 680 nm; the reaction-center chlorophyll of photosystem is also referred to as P680. The excited chlorophyll passes an electron to a pri-mary acceptor.
What are the two types of photosystems in light-dependent reactions?
Though the two photosystems in the light-dependent reactions got their name in the series, they were discovered, but the photosystem II (PS II) comes first in the path in the electron flow and then the photosystem I (PSI). In this content, we will explore the difference between the two types of pf photosystem and a brief description of them.
What are the two parts of a light reaction?
The light reactions consist of two parts, accomplished by two distinct but related photosystems. One part of the reaction is the reduction of NADP+ to NADPH, carried out by photosystem I (PSI). The second part of the reaction is the oxidation of water to produce oxygen, carried out by photosystem II (PSII).