Which statement is false about the heme group?
A)When oxygen binds to heme,the iron ion is oxidized from Fe²+ to Fe ³+.
B)If exposed to air,a free heme group (not associated with hemoglobin)is readily oxidized converting Fe²+ to Fe ³+ and can no longer bind oxygen.
C)The heme group is tightly,but non-covalently,held in myoglobin molecule.
D)The chemical structure of the heme groups in myoglobin and hemoglobin are identical.

Question

Quizplus · Accepted Answer

When oxygen binds to a heme group, the iron ion remains in the Fe²+ state; it does not get oxidized to Fe³+. The ability to bind oxygen is due to the iron ion being in the Fe²+ state.

Which Statement Is False About the Heme Group