Question:
Mineral magnesium is present in which of the following pigment?
Mineral magnesium is present in which of the following pigment?
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To remember: Haemoglobin uses Iron (Fe) for oxygen transport, while Chlorophyll uses Magnesium (Mg) for photosynthesis.
Updated On: Jul 4, 2026
- Haemoglobin
- Myoglobin
- Chlorophyll
- Anthocyanin
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The Correct Option is C
Solution and Explanation
Concept:
Many biological pigments are coordination complexes involving a central metal ion.
• Porphyrin rings are common structures in these pigments.
• Different central atoms change the function and color of the pigment.
Step 1: Analyzing Haemoglobin and Myoglobin.
Haemoglobin and Myoglobin are heme proteins. The central metal ion in these pigments is Iron (\(Fe^{2+}\)).
Step 2: Analyzing Chlorophyll structure.
Chlorophyll has a chlorin ring structure similar to porphyrin. The central metallic atom in chlorophyll is Magnesium (\(Mg^{2+}\)).
Step 3: Confirming the role of Magnesium.
Magnesium is essential for the light-harvesting property of plants. Without Mg, the green pigment cannot capture solar energy. Final Answer: (C)
• Porphyrin rings are common structures in these pigments.
• Different central atoms change the function and color of the pigment.
Step 1: Analyzing Haemoglobin and Myoglobin.
Haemoglobin and Myoglobin are heme proteins. The central metal ion in these pigments is Iron (\(Fe^{2+}\)).
Step 2: Analyzing Chlorophyll structure.
Chlorophyll has a chlorin ring structure similar to porphyrin. The central metallic atom in chlorophyll is Magnesium (\(Mg^{2+}\)).
Step 3: Confirming the role of Magnesium.
Magnesium is essential for the light-harvesting property of plants. Without Mg, the green pigment cannot capture solar energy. Final Answer: (C)
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