hemoglobine is a protein part of the structure of the red cells in the blood.oXygen combines with fe2+ ions of the hemoglobine forma oxihemoglobinemax 4 molecules of oxygen per molecule of hemoglobine and is carrie from the alveoles to the tissue where is realesed because the ph deacreases and the temperature increases and this will make the capacity lower of hemoglobin and oxygen to bond .as i said is a way to transport oxygen and also co2 after the o2 is used by cells co2 bonds to hemoglobin and results carbaminohemoglobin and transported back to the alveoles (lungs.