noun 下载 🔗分享 血红素,血红蛋白辅基。 The 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. Examples : "The red color of blood comes from the iron in the heme found within hemoglobin. " 血液的红色来自于血红蛋白中的血红素,血红素里含有铁。 biochemistry chemistry biology medicine physiology compound substance part anatomy organ structure 与AI对话词汇游戏阅读练习