Question

Under normal conditions?

a. Adult Hb (HbA) binds to oxygen more tightly than Mb binds to oxygen

b. Fetal Hb (HbF) binds oxygen more tightly than HbA binds to oxygen

c. HbA binds oxygen more tightly than either HbF or Mb binds to oxygen

d. Mb has the lowest affinity for oxygen as compared to HbA and HbF

e. More than one of the above statements is correct

I know that Fetal Hb binds oxygen more strongly than adult Hb

but I am stuck between choosing b as my answer, or e, because I was thinking maybe b and d are correct

Answer 1

Myoglobin has a higher affinity to \(O_2\) than adult hemoglobin does.

so that excludes a,c and d.