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What is the meaning of the statement in bracket...... Both the photosystems must have one molecule of chlorophyll a. Then why its written except one molecule of chlorophyll a

What is the meaning of the statement in bracket...... Both the photosystems must have one molecule of chlorophyll a. Then why its written except one molecule of chlorophyll a

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Simran Vinaik
askIITians Faculty 1230 Points
6 years ago
You should understand that antenna pigment and reaction centre. The capture of light energy for photosynthesis is enhanced by networks of pigments in the chloroplasts arranged in aggregates on the thylakoids. These aggregates are called antennae complexes.The antenna pigments are predominantly chlorophyll b,xanthophylls, and carotenes.
Chlorophyll a is known as the core pigment which forms the reaction centre. i.e. why the line says that each photosystem has antenna proteins that form the light harvesting complex and a reaction center made of chlorophyll a.
A photon is absorbed by one of the pigment molecules and transfers that energy to neighboring molecules until it reaches the reaction center where the energy is used to transfer an energetic electron to an electron acceptor.
554-287_antenna protein.gif

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