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Question

Number of oxygen molecule that bind to a molecule of haemoglobin are

A
2
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B
3
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C
4
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D
6
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Solution

The correct option is C 4
Haemoglobin is a protein molecule found in red blood cells (erythrocytes) made of four subunits: two alpha subunits and two beta subunits. Each subunit surrounds a central haeme group that contains iron and binds one oxygen molecule, allowing each haemoglobin molecule to bind four oxygen molecules.

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