Question

-Explain the process of photosystem 1

-Explain the process of photosystem 2

Answer 1

-Photosystem 1 :

Excited electron is captured by primary electron acceptor.

These excited electrons get passed via short electron transport chain to NADH⁺ is the final electron acceptor.

Electrons are stored in their high state of potential energy in NADH molecule.

The final products of light reactions are NADH, ATP, O_2.

Photosystem II :

Light energy is trapped in photosystem II and promotes an electron to a higher level. the electrons are taken by an electron acceptor. Hence leaving the chlorophyll molecule positive.

Further, it splits water by receiving 2 from e^- it. The electrons are passed from one acceptor (ie. plastoquinone and cytochrome) to the next photosystem II.

AIn this path the energy is lost and reduces ADP to ATP.