Hemoglobin is a crystallizable, conjugated protein consisting of an iron-containing pigment (called heme or hematin) and a simple protein, globin. In the lungs, it combines readily with oxygen to form a loose, unstable compound called oxyhemoglobin, a process called oxygenation.
In the tissues of the body, where oxygen tension is low and carbon dioxide tension is high, oxyhemoglobin liberates its oxygen in...
A basic idea in science says that for every action there's an equal and opposite reaction. If someone gets pushed, the usual reaction is to shove... Read more »