Certain statements are made below about hemoglobin.
A. HbA1c has glucose attached to the terminal valine in each β chain.
B. NADH-methemoglobin reductase system in RBC converts methemoglobin to hemoglobin.
C. O2 binds to the Fe2+ in the heme moiety of hemoglobin to form oxyhemoglobin.
D. The affinity of hemoglobin for O2 is much higher than that of its affinity for carbon monoxide.
Which one of the following options represents combination of all correct statements?
1
A and B
2
C and D
3
A and C
4
B and C