What is a photosystem?
A photosystem is a complex in which photosynthetic pigments are arranged in the form of clusters for the efficient absorption and utilization of sunlight energy in thylakoid membranes.
Photosystem constitutes two main parts. A brief concept to them is as follows:
- Antenna Complex:
It is a light- harvesting complex containing proteins and many molecules of
#"cholorophyll a"#, #"cholorophyll b"#and #"carotenoids"#. Photons of light are first absorbed by antenna complex pigments which then transfer the energy to the reaction center.
- Reaction Center:
It has one or more molecules of
#"cholorophyll a"#along with primary electron acceptor and associated electron carriers of electron transport system.
It receives the absorbed sunlight energy from the antenna complex and convert that energy into
In plants and photosynthetic green algae
In photosynthetic bacteria
Hope it helps...