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  4. Mineral found in red pigment of vertebrate blood is

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Q. Mineral found in red pigment of vertebrate blood is

AIPMTAIPMT 1989Structural Organisation in Animals

Solution:

Red pigment of vertebrate blood is haemoglobin. Haemoglobin is a conjugated protein. It consists of a basic protein globin joined to a nonprotein group heme, hence the name haemoglobin. Heme is an iron-porphyrin ring. A mammalian haemoglobin molecule is a complex of 4 heme molecules joined with 4 globin molecules.