A Hemoglobin Molecule Contains

Multiple Choice

A hemoglobin molecule contains

A) three protein chains, four heme groups, and two iron ions.
B) two protein chains, two heme groups, and four iron ions.
C) four protein chains, two heme groups, and two iron ions.
D) four protein chains, four heme groups, and four iron ions.
E) four protein chains, six heme groups, and two iron ions.