the haemoglobin of a human foetus

Options

A. has a lower affinity for oxygen than that of the adult
B. its affinity for oxygen is the same as that of an adult
C. has only 2 protein sub units instead of 4
D. has a higher affinity for oxygen than that of an adult

Answer

D

Explanation

Ghaemoglobin is the protein that makes red blood corpuscles apper rred, binda easily and reversibly with oxygen .Normal values for haemoglobin are 14-20 h g/100 mL of blood in infants 13-18 g/100 mL in adult male and 12-16 g/100 mL in adult females. Foetal red blood cells are not sickl,e shaped even in that destined to have sickle cell anaemia i.e haemoglobin of foetus has higher affinity of oxygen than theat and adult.