they don't use osmosis
Red blood cells form from the red bone marrow in certain bones. They produce hemoglobin from the iron , which gives them their red colour and provide it the ability to perform its job.
googly moogly
Red blood cells perform the blood's primary function of transporting materials (gases, nutrition, wastes) to and from the various tissues of the body and this is why there are more red blood cells than white blood cells. White blood cells provide the blood's secondary functions of immunity and clotting and therefore do not need to be as many.
The job of red blood cells is to carry oxygen.
No, that is the job of the various white blood cells.
Root hair cells are used in osmosis to transmit water and nutrients from the soil. These root hair cells reduce the loss of water and adapt to the large surface area and speeds up osmosis process.
To carry oxygen
The blood's most important job is the movement of wastes, oxygen, and nutrients to and from body cells. This movement allows the cells to maintain cellular homeostasis.
Your blood. Iron is essential for your blood cells to do their job.
kill
They're specialised because their sole job is to transport oxygen to the body's cells, and carry carbon dioxide away. This is similar to white blood cells who's only job is to defend the body from invading diseases.
The job of a blood cell is to pick up oxygen from the lungs and carrying oxygen to the other cells in the body.