Persons with 'AB' blood group are called as "Universal recipients". This is due to:

1. Presence of antibodies, anti-A and anti-B, on RBCs.

2. Absence of antibodies, anti-A and anti-B, in plasma.

3. Absence of antigens A and B on the surface of RBCs.

4. Absence of antigens A and B in plasma.

Erythroblastosis fetalis is caused when:

1. Rh^– female & Rh⁺ male

2. Rh⁺ female & Rh^– male

3. Rh⁺ female & Rh⁺ male

4. Rh^– female & Rh^– male

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 

Given below is the ECG of a normal human. Which one of its components is correctly interpreted below?

The haemoglobin content per 100 ml of blood of a normal healthy human adult is:

1. 25-30 g

2. 17-20g

3. 12-16 g

4. 5-11

Which of the following conditions causes erythroblastosis fetalis?

1. Mother ${\mathrm{Rh}}^{+\mathrm{ve}}$ and fetus ${\mathrm{Rh}}^{-\mathrm{ve}}$

2. Mother ${\mathrm{Rh}}^{-\mathrm{ve}}$ and fetus ${\mathrm{Rh}}^{+\mathrm{ve}}$

3. Both mother and fetus ${\mathrm{Rh}}^{-\mathrm{ve}}$

4. Both mother and fetus ${\mathrm{Rh}}^{+\mathrm{ve}}$

Which of the following is associated with a decrease in cardiac output?

1. Sympathetic nerves

2. Parasympathetic neural signals

3. Pneumotaxic center

4. Adrenal medullary hormones

Inadequate supply of oxygen to heart muscles leads to a symptom of acute chest pain. This disorder of the circulatory system is identified as: 
1. Angina pectoris 
2. Cardiac arrest 
3. Heart failure 
4. Coronary Heart Disease