Question

Most oxygen in the blood is transported:

Answer 1

Answer: 1.5% is carried in the plasma as a dissolved gas

98.5% O2 carried in the blood is bound to the protein hemoglobin in red blood cells. A fully saturated oxyhemoglobin has four O2 molecules attached.

Explanation:

Answer 2

The protein inside red blood cells that carries oxygen to cells and carbon dioxide to the lungs is hemoglobin.