At 37°c and atmospheric pressure the maximum volume of oxygen which blood can carry when fully oxygenated is 20 ml of o2 per 100 ml blood. cm a) how many moles of o, are carried by a liter of blood? b) hemoglobin is the oxygen transport protein in blood and has four sites for binding o2. how many thare neded to transport o, in1 hemoglobin molecules are needed to transport o2 in 1.0 l of oxygenated blood?