Answer:
JHFGKJlj;kdfjhdk;sld/jfh;gjdskj
Explanation:
dlj;hlksgkbdzjsedlajjkfxc
----Slatt
Explanation:
Each hemoglobin molecule is made up of four heme groups surrounding a globin group, forming a tetrahedral structure. ... There are four iron atoms in each molecule of hemoglobin, which accordingly can bind four atoms of oxygen. Globin consists of two linked pairs of polypeptide chains.
