Biology is back!
Biology
Level
1
Which element is considered the main constituent of blood?
Potash
Carbon
Iron
Aluminium
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
1 solution
Haemoglobin is made of two words:- "Haemo" and "globin" of which "Haemo" means iron and "globin" means protein. Clearly, iron is the main constituent. Reserach reveals that 7 0 % of haemoglobin contains iron.