noun🔗ShareThe component of hemoglobin (and other hemoproteins) responsible for binding oxygen. It consists of an iron ion that binds oxygen and a porphyrin ring that binds the globin molecules; one molecule binds one molecule of oxygen."The red color of blood comes from the iron in the heme found within hemoglobin. "biochemistrychemistrybiologymedicinephysiologycompoundsubstancepartanatomyorganstructureChat with AIVocabulary GamePractice Reading
