Iron-Containing Haem Groups

Haemoglobin and myoglobin both have four iron-containing haem groups.

Haemoglobin has one iron-containing haem group, while myoglobin has four iron-containing haem groups.

Haemoglobin has four iron-containing haem groups, while myoglobin has one iron-containing haem group. (correct)

Haemoglobin and myoglobin both have one iron-containing haem group.

Haemoglobin (correct)

Myoglobin

Both have the same number of iron-containing haem groups

None of the above

Haemoglobin (correct)

Myoglobin

Both molecules have equal affinity for oxygen

None of the above