Question
Describe a structure of a chlorophyll molecule.

Answer

$1.$ Chemically chlorophyll molecule consists of two parts head of tetrapyrrole the porphyrin ring and a long hydrocarbon tail called phytol attached to the porphyrin group.
$2.$ Both chlorophyll$-a$ and chlorophyll-b are similar in their molecular structure, except that the methyl group $(CH_3)$ in chlorophyll$-a$ is replaced with an aldehyde group $(CH_O)$ in chlorophyll$-b$.

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