Light - Dependant Stage of Photosynthesis

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The making of ATP:
When a chlorophyll molecule absorbs light, the in the chlorophyll molecule
become excited. In fact, they leave the chlorophyll molecule altogether! The electrons are then
taken up by molecules called (The chlorophyll molecule is said to have been
and the electron carrier ). The electrons are passes along a chain of electron
carriers, each of energy level than the previous one. The released is used to
convert ADP and an phosphate to an molecule.
Photolysis of Water:
The loss of electrons from the excitement of electrons leaves it short on . To replace
electrons, molecules are split using energy. The equation of this process
4HO e + H + .
The protons produced are taken up by which then becomes . This
reduced is later used in the light-independent stage of photosynthesis.


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