Each hemoglobin molecule is made of four subunits, each containing a heme group that can bind one molecule of oxygen. Therefore, one molecule of hemoglobin can bind four molecules of oxygen. Oxyhemoglobin is hemoglobin bound by oxygen, and it gives oxygen-rich blood a red color.ach hemoglobin molecule is made of four subunits, each containing a heme group that can bind one molecule of oxygen. Therefore, one molecule of hemoglobin can bind four molecules of oxygen. Oxyhemoglobin is hemoglobin bound by oxygen, and it gives oxygen-rich blood a red color.
The Second Reich was Imperial Germany (1871-1918),  as unified by Bismarck in 1871.   Note. During the Weimar period (1919-33) the official name of  Germany was still Deutsches Reich..    ________     Hitler's regime was never officially known as the Third  Reich. The term was first discussed in 1923 by German historian  Arthur Moeller van den Bruck in his Book Das dritte Reich  (The Third Empire), which he hoped would soon come into beling.
The Axis of Power Usually there is known to be three main countries in the Axis Powers. Germany, Italy and Japan are the major three they are also known as the Tri Axis.However there are more countries in the Axis Powers then just those three, there is Austria-Hungary, Romania, and Bulgaria among others.he Axis Powers, is just the title Germany and those allied with Germany gave themselves for World War Two, just like in World War One they were known as the Central Powers although in World War One these were not all the same countries allied with Germany. Hope this helps!