Which one of the following proteins transport | vedclass

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(D) Haemoglobin is a protein pigment of red blood cells,which is remarkably suited for the transport of oxygen. It binds to oxygen under higher alveol

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Haemoglobin

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(D) Haemoglobin is a protein pigment of red blood cells,which is remarkably suited for the transport of oxygen. It binds to oxygen under higher alveolar oxygen concentration and a little higher $pH$ and cooler temperature. The product is oxyhaemoglobin. Likewise,under lower concentration of oxygen in the tissues and a comparatively lower $pH$ and warmer temperature,the tissues facilitate the release of oxygen from haemoglobin and the formation of deoxyhaemoglobin $(Hb)$. This makes option $D$ correct. Myoglobin is the pigment of muscles that serves to store oxygen,but owing to its higher affinity for oxygen than haemoglobin,it does not release oxygen easily,which makes option $A$ incorrect. Insulin is secreted by islets of Langerhans of the pancreas and serves to lower the blood glucose level by stimulating the uptake of glucose by cells. Albumins,a group of proteins produced by the liver,are present in human plasma and serve to maintain the osmotic concentration of blood.

Which one of the following proteins transports oxygen in the blood stream?

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