the splitting of water molecules during the Calvin cycle

Photosynthesis occurs inside chloroplasts. Chloroplasts contain chlorophyll, a green pigment found inside the thylakoid membranes. These chlorophyll molecules are arranged in groups called photosystems. There are two types of photosystems, Photosystem II and Photosystem I. When a chlorophyll molecule absorbs light, the energy from this light raises an electron within the chlorophyll molecule to a higher energy state. The chlorophyll molecule is then said to be photoactivated. Excited electron anywhere within the photosystem are then passed on from one chlorophyll molecule to the next until they reach a special chlorophyll molecule at the reaction centre of the photosystem. This special chlorophyll molecule then passes on the excited electron to a chain of electron carriers.

the signifcance oF splitting water during photosynthesis?

Photosynthesis Images Show Splitting of the Water …

in water-splitting during photosynthesis.

The major breakthrough according to Lyubinetsky is that water itself can work as a catalyst. We are familiar with the fact that a catalyst is a molecule that affects the rate of a chemical reaction and remains unchanged in the procedure. He observed, “Water is required to move the adatoms around, but like a catalyst it is not consumed in the reaction. You start with water and you end with water.”

20/08/2014 · Water-splitting in photosynthesis ..

So how can these factors have an effect on the rate of photosynthesis? Lets start off with the light intensity. When the light intensity is poor, there is a shortage of ATP and NADPH, as these are products from the light dependent reactions. Without these products the light independent reactions can't occur as glycerate 3-phosphate cannot be reduced. Therefore a shortage of these products will limit the rate of photosynthesis. When the carbon dioxide concentration is low, the amount of glycerate 3-phosphate produced is limited as carbon dioxide is needed for its production and therefore the rate of photosynthesis is affected. Finally, many enzymes are involved during the process of photosynthesis. At low temperatures these enzymes work slower. At high temperatures the enzymes no longer work effectively. This affects the rate of the reactions in the Calvin cycle and therefore the rate of photosynthesis will be affected.

The splitting of water molecules on the inside of thylakoid membranes during photosynthesis is called.

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10/07/2014 · First snapshots of water splitting in ..

of water splitting in photosynthesis.