Vitamin which induces maturation of R.B.C.:
1. $B_1$
2. A
3. $B_{12}$
4. D

Which of following occurs in maximum concentration in blood plasma (ECF):
1. $K^{+}$

2. $M{g}^{+2}$

3. $C{a}^{+2}$

4. $N{a}^{+}$

The correct statement in respect of protein haemoglobin is that it:

1. Maintains blood sugar level

2. Acts as an oxygen carrier in the blood

3. Forms antibodies and offers resistance to diseases

4. Functions as a catalyst for biological reactions 

G-6-P dehydrogenase deficiency is associated with haemolysis of:

1. Leucocytes

2. Lymphocytes

3. Platelets

4. RBCs