The Oval Office exerts tremendous gravitational pull on its occupants. President Obama, in a fingers-crossed wish, has already predicted that the tug of the office eventually will move Trump into a more conventional orbit. Not so far.
Red blood cells are also known as erythrocytes. The red blood cells transport oxygen through the circulatory system to the cells and tissues of the body. In the cells, oxygen and glucose support glycolysis, the production of ATP (adenosine triphosphate). The red blood cells are filled with hemoglobin, the oxygen-carrying part of the red blood cell. Hemoglobin can also be spelled âhaemoglobin.â Each red blood cell contains 250 to 300 million molecules of hemoglobin. A molecule of hemoglobin is made up of one globin protein, with four iron-containing heme groups.
Each erythrocyte contains 200 to 300 molecules of hemoglobin, each molecule of hemoglobin contains four heme groups, and each heme carries one molecule of oxygen. A hemoglobin molecule contains four globin polypeptide chains. Each polypeptide chain is composed of 141 to 146 amino acids.