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Question

The colour of blood is red due to the presence of

A
Magnesium
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B
Cytoglobin
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C
Haemoglobin
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D
All of the above
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Solution

The correct option is B Haemoglobin
Hemoglobin is iron-containing oxygen transport protein in the red blood cells of all vertebrates. It has an oxygen binding capacity and gives the red colour to the blood. Each subunit of hemoglobin is a globular protein with an embedded heme group.

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