Carbon dioxide bound to the amino acids of hemoglobin forms which molecule?

1. Oxygen binds to the iron of heme, giving oxyhemoglobin. 2. Carbon dioxide binds instead to the amino acids of the globin chains. 3. That product is carbaminohemoglobin, which carries the gas back to the lungs. 4. Reduced hemoglobin is another name for deoxyhemoglobin, which is hemoglobin that has released its oxygen, so it does not describe a carbon dioxide compound. 5. Bicarbonate ion forms in the plasma rather than on the hemoglobin molecule. _Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 18 "The Cardiovascular System: Blood", section 18.3 Erythrocytes_