These green pigments can be found in tissue of green plants. More precisely, they are located in chloroplast (an organelle in plant cell). The two types of chlorophylls have a slightly different colour and chemical structure. The difference between the two types is in the functional group adjacent to the second pyrrole of the compound. A characteristic to both is magnesium ion (Mg 2+) located in the centre of the heme structure.
What different functional groups can you find in the structure of chlorophyll a and b?
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