A Hemoglobin Molecule Contains

question 2

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.