From where energy is provided for the synthesis of ATP in PS II?

ATP stands for Adenosine triphosphate is called the energy currency of the cell. It is an organic compound comprised of phosphate groups, adenine, and sugar ribose. These molecules provide energy for various biochemical processes in the body.

Energy for synthesis

  • The proton gradient is formed due to the accumulation of protons on the lumen side of the thylakoid. Also, the transport of electrons through the photosystem moves protons from the stroma to the lumen side, decreasing the proton concentration in the stroma and increasing it on the lumen side.
  • This results in the generation of a proton gradient across the thylakoid membrane.
  • The ATPase enzyme breaks down this proton gradient and uses its energy for the synthesis of ATP molecules.

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