The fourth option is the correct one - red blood cells transport oxygen around the body.
White blood cells are mainly responsible for inflammatory responses.
In humans, red blood cells are biconcave and do not contain a nucleus.
One of the main components of red blood cells is haemoglobin.
Red blood cells contain hemoglobin and transport oxygen
The Bicarbonate Buffer System
to transport oxygen
Iron
The Earthworm.
all red blood cells carry hemoglobin to help transport oxygen.
the hemoglobin is example for transport protein
hemoglobin
Iron
which permits them to transport oxygen and carbon dioxide
hemoglobin
Hemoglobin