Question

What is the significance of photolysis of water in photophosphorylation? What happens to each product of this process?how many molecules of ATP and how many molecules of NADPH are spent to fix 3 C02 molecules in Calvin cycle​

Answer 1

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G3P produced by the Calvin cycle is the raw material used to synthesize glucose and other carbohydrates. The Calvin cycle uses 18 ATP and 12 NADPH molecules to produce one glucose molecule.

Answer 2

Answer:

Photolysis of water in the presence of sunlight is the breakdown of the water molecule into hydrogen and oxygen. During the first photosynthesis step, ps-II (p680) absorbs the light energy. The chlorophyll electrons are energized to the excited state and absorbed by the electron acceptor.

The Calvin cycle can be divided into two stages. In the first stage, ATP and NADPH is used to fix CO2. Two NADPH molecules and three ATP molecules are required to fix one CO2 molecule. In the second stage, the carbon atoms are shuffled to enable the release of one sugar molecule.