Question
Explain the structure of reaction centre.
✓
Answer
Solar energy is trapped by chlorophyll and stored in the form of chemical energy as $\text{ATP}$ and in the form of reducing power as $\text{NADPH}_{2.}$ Oxygen is evolved in the light reaction by splitting of water. The components of light reaction are as follows:
Reaction centre:
$1.$The light absorbing pigments present in thylakoid membranes are arranged in clusters of chlorophyll and accessory pigments.
$2. \ P-680$ and $P-700$ are the special type of chlorophyll molecules which form the reaction centres or photocentres.
$3.$ Solar energy is harvested by accessory pigments and other chlorophyll molecule and is passed on to the reaction centre.
$4.$ These $($accessory pigments$)$ are known as light harvesting or antenna molecule. Their function is to absorb light energy and transmit at a very high rate to the reaction centre where the photochemical reactions occur.
Reaction centre:
$1.$The light absorbing pigments present in thylakoid membranes are arranged in clusters of chlorophyll and accessory pigments.
$2. \ P-680$ and $P-700$ are the special type of chlorophyll molecules which form the reaction centres or photocentres.
$3.$ Solar energy is harvested by accessory pigments and other chlorophyll molecule and is passed on to the reaction centre.
$4.$ These $($accessory pigments$)$ are known as light harvesting or antenna molecule. Their function is to absorb light energy and transmit at a very high rate to the reaction centre where the photochemical reactions occur.
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