H2C=CH CH2 H (ID 0 -CH2 CH, -c00 HN Figure 1:The picture is the Figure 2:The pictureare the secondary structure of right is ofthe heme group in hemoglobin,with only the protein hemoglobin and shows the nd without the side Fe(⑩iron atom.Figure 2: The pictureare the right is of the heme group in hemoglobin and shows the Fe(II) iron atom. Figure 1: The picture is the secondary structure of hemoglobin, with only the protein backbone and without the side chains