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.
Hitler referred to Germany under his regime as the Third Reich. He wanted to create a new government that would rule Europe for 1000 years.  The Axis was the alliance of 3 countries, Germany, Italy and Japan, that fought against the Allies. Other countries also joined or were forced to join the Axis.
Reich (/ËraÉªk/; German: ( listen)) is a German word literally meaning realm. The terms Kaiserreich (literally realm of an emperor) and KÃ¶nigreich (literally realm of a king) are used in German to refer to empires and kingdoms respectively.