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| Q. |
Haemoglobin contains the metal - |
| A. | Copper |
| B. | Molybdenum |
| C. | Iron |
| D. | Magnesium |
| Answer» C. Iron | |
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Explanation: Haemoglobin is an iron- containing protein in red blood cells. It contains a haem prosthetic group that has an iron atom at its centre. When the iron is bound to oxygen, the haem group is red in colour (oxyhameoglobin), and when it lacks oxygen (deoxygenated form) it is blue-red. |
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