What happens during the toxic effect of carbon monoxide $(CO)$?

The ratio of oxyhemoglobin to hemoglobin in the blood is dependent on which of the following?

Identify the correct group of statements:
$I.$ Oxygen is carried by haemoglobin
$II.$ Oxygen is carried by carbonic anhydrase
$III.$ $CO_{2}$ is carried by haemoglobin
$IV.$ $SO_{2}$ is carried by haemoglobin
$V.$ Only oxygen is transported by the blood
$VI.$ Only $CO_{2}$ is transported by the blood
Choose the correct option.

Approximately what amount of $O_{2}$ reaches the tissues via $100 \ ml$ of blood (in $ml$)?

Which of the following factors affect the binding of oxygen with hemoglobin?

The majority of carbon dioxide produced by our body cells is transported to the lungs as