Read the following statements carefully: (I) Every 100 ml of deoxygenated blood delivers approximately 4 ml of CO ₂ to the alveoli. (II) Every 100 ml of oxygenated blood delivers around 5 ml of O ₂ to the tissues under normal physiological conditions. (III) Each haemoglobin molecule can carry a maximum of four molecules of O ₂ . (IV) Binding of oxygen with haemoglobin is primarily related to the partial pressure of C

Step-by-step solution

Statement (I) is correct. Every 100 ml of deoxygenated blood delivers approximately 4 ml of CO ₂ to the alveoli. Statement (II) is correct. Under normal physiological conditions, every 100 ml of oxygenated blood delivers around 5 ml of O ₂ to the tissues. Statement (III) is correct. Each haemoglobin molecule has four haem groups and can bind to a maximum of four molecules of O ₂ . Statement (IV) is incorrect. The binding of oxygen with haemoglobin is primarily related to the partial pressure of O ₂ ( pO ₂ ), althou