Which part of a hemoglobin molecule binds to a molecule of O₂? A)the surface of an α globin chain B)the surface of a β globin chain C)the iron atom in the center of a heme group D)the copper atom wedged between an α and a β globin chain E)the hydrophobic pocket between two α chains

Question

Quizplus · Accepted Answer

O₂ is a small molecule that binds specifically to the iron atom in the heme group of hemoglobin. Therefore, the correct answer is C, the iron atom in the center of a heme group.

Which Part of a Hemoglobin Molecule Binds to a Molecule