The red colouring matter of blood which trans | vedclass

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Question

(A) Haemoglobin is the red-coloured respiratory pigment found in the $RBCs$ of most animals. It consists of a protein called globin and a non-protein

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Iron

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(A) Haemoglobin is the red-coloured respiratory pigment found in the $RBCs$ of most animals. It consists of a protein called globin and a non-protein prosthetic group called heme. The heme group contains an iron $(Fe^{2+})$ atom at the center of a porphyrin ring system. This iron atom is responsible for the reversible binding and transport of oxygen from the lungs to the body tissues,and it also assists in the transport of $CO_{2}$ back to the lungs.

The red colouring matter of blood which transports oxygen contains an element in a system of rings. The element is:

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