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WBCS Preliminary Examination 2016 — General Studies · Question 117 of 200

Q117
General ScienceBiology
Which metal is present in chlorophyll?
  1. a.Iron
  2. b.Zinc
  3. c.Aluminium
  4. d.Magnesium

Answer: (D) Magnesium

Magnesium (Mg) is the metal at the centre of the porphyrin ring structure of chlorophyll molecules. Without magnesium, chlorophyll cannot be synthesised. Iron is present in haemoglobin (not chlorophyll); zinc is a co-factor for many enzymes.

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Which metal is present in chlorophyll? — WBCS Preliminary Examination 2016 Q117 | Prostuti360°