Question

why are red blood cells are useful in transport of oxygen

Answer 1

Hey mate, here is your answer ===

Red blood cells are useful in transport of oxygen as haemoglobin, a component present in red blood cells which carries oxygen....

Hope it helps u dear :)

Answer 2

These specialised cells are like flattened discs, which gives them a much greater surface area with which to exchange oxygen and carbon dioxide in the lungs and with body cells. Red blood cells are able to carry oxygen so efficiently because of a special protein inside them: haemoglobin