Which metal is present at the centre of the chlorophyll molecule?
- A.Iron
- B.Magnesium
- C.Calcium
- D.Zinc
Show answer
Chlorophyll is built on a ring structure with a single magnesium atom held at its centre, and because magnesium is needed to make the pigment, a plant short of magnesium develops chlorosis, the yellowing of leaves between the veins.
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