Answer:
Explanation:
Red blood cells contain enormous amounts of a protein called hemoglobin. This iron-containing molecule binds oxygen as oxygen molecules enter blood vessels in the lungs. Hemoglobin is also responsible for the characteristic red color of blood.
Answer:
This promotes the repair response of diseased tissue using stem cells.
Explanation:
It also uses stems instead of donor organs.
I gave you two, hope it helps.
Respiration takes place in the mitochondria