Custom Practice Test

Biology-II-Section-A

1. Match each item in Column I with one given in Column II and select the correct match from the codes given:

	Column I		Column II
A.	Lub	P.	Closure of AV valves
B.	Dub	Q.	Closure of semilunar valves
C.	Passive ventricular filling	R.	70%
D.	Active ventricular filling	S.	30%

Codes:

	A	B	C	D
1.	Q	P	S	R
2.	P	Q	R	S
3.	P	Q	S	R
4.	Q	P	R	S

2.

Figure shows a schematic plan of blood circulation in humans with labels A to D. Identify the label and give its function/s.

1.	B-Pulmonary artery- takes blood from heart to lungs, PO₂ = 90mm Hg
2.	C-Vena Cava- takes blood from body parts to right auricle, PCO₂ = 45mm Hg
3.	D-Dorsal aorta- takes blood from heart to body parts, PO₂ = 95mm Hg
4.	A- Pulmonary vein - takes impure blood from body parts, PO₂ = 60mm Hg

3. The two main phagocytes in the human blood include neutrophils and:

1.	Lymphocytes	2.	Basophils
3.	Monocytes	4.	Eosinophils

4. The cell shown in the given diagram:

1.	is a bone marrow stem cells committed to produce RBCs
2.	is the megakaryocyte
3.	is the commonest WBC and is phagocytic
4.	is responsible for acquired immunity in humans

5. A specialised nodal tissue embedded in the lower corner of the right atrium, close to Atrio-ventricular septum, delays the spreading of impulses to heart apex for about 0.1 sec. This delay allows:
1. blood to enter aorta.
2. the ventricles to empty completely.
3. blood to enter pulmonary arteries.
4. the atria to empty completely.

6.

Assertion(A):	Absence of mitochondria in mature human RBCs increases the efficiency of oxygen delivery at tissues by them.
Reason (R):	RBCs do not need ATP

1.	Both (A) and (R) are True but (R) does not correctly explain (A).
2.	(A) is True but (R) is False.
3.	Both (A) and (R) are True and (R) correctly explains (A).
4.	(A) is False but (R) is True.

7. The atrial systole increases the flow of blood into the ventricles by about:

1.	10 percent	2.	30 percent
3.	50 percent	4.	70 percent

8. A healthy male has a resting cardiac output of 6000 ml per minute with a stroke volume of 80 ml. What is the heart rate of this person?

1.	72 per minute	2.	75 per minute
3.	80 per minute	4.	100 per minute

9.

A person with an unknown blood group under the ABO system, has suffered significant blood loss in an accident and needs an immediate blood transfusion. His friend who has a valid certificate of his blood type, offers blood donation without delay. What would have been the type of blood group of the donor friend?

1. Type AB
2. Type O
3. Type A
4. Type B

10. First heart sound is due to
1. Opening of tri and bi-cuspid valves
2. Closure of tri and bi-cuspid valves
3. Opening of semilunar valves
4. Closure of semilunar valves

11. Cardiac output is

1.	Volume of blood pumped by each ventricle in each cardiac cycle
2.	Volume of blood pumped out by each ventricle per minute
3.	5 litres in a healthy individual
4.	Both (2) and (3)

12. If the basophil is the rarest WBC in human blood, the commonest WBC in human blood is:
1. Lymphocyte
2. Neutrophil
3. Monocyte
4. Eosinophil

13. The stroke volume of left ventricle in a person is 75 ml. His cardiac output is 6000 ml. What will be his heart rate?

1.	72 per minute	2.	75 per minute
3.	80 per minute	4.	100 per minute

14. The principal solute, dissolved in the plasma portion of the blood as well as the extracellular fluid (ECF), amongst the following, will be:
1. haemoglobin
2. Na⁺
3. K⁺
4. albumin

15. The plasma of a person has both anti-A and anti-B antibodies. The blood type of this person will be:

1.	Type O	2.	Type AB
3.	Type A	4.	Type B

16. Consider the two statements:

Statement I:	A muscular wall called a septum prevents the mixture of blood between the left and right sides of the heart.
Statement II:	The left ventricle has a thicker musculature when compared to the musculature of the right ventricle.

1. Statement I is correct: Statement II is incorrect
2. Statement I is incorrect: Statement II is correct
3. Statement I is correct: Statement II is correct
4. Statement I is incorrect: Statement II is incorrect

17. The first and the second heart sounds are produced respectively by:

1.	the closure of the atrioventricular and the opening of the semilunar valves
2.	the opening of the atrioventricular and the closure of the semilunar valves
3.	the closure of the atrioventricular and semilunar valves
4.	the opening of the atrioventricular and semilunar valves

18. What is the type of antibody found in the plasma of a person whose RBCs have type B antigen on the surface?
1. anti-A
2. anti-B
3. both anti-A and anti-B
4. neither anti-A nor anti-B

19.

Doctors use a stethoscope to hear the sounds produced during each cardiac cycle. The second sound is heard when:

1.	AV valves open up
2.	Ventricular walls vibrate due to the gushing of blood from the atria
3.	Semi-lunar valves close down after the blood flows into vessels from the ventricles
4.	AV node receives a signal from SA node

20. Which of the following major plasma proteins is primarily responsible for helping in the maintenance of colloid osmotic balance in the intravascular fluid?
1. Albumin
2. α Globulin
3. β Globulin
4. γ Globulin

21. Consider the given two statements:

Assertion (A):	SA node is called the pacemaker of the human heart.
Reason (R):	SA node is auto-excitable.

1.	Both (A) and (R) are True and (R) correctly explains the (A).
2.	Both (A) and (R) are True but (R) does not correctly explain the (A).
3.	(A) is True; (R) is False.
4.	Both (A) and (R) are False.

22.

Which one of the following is correct?
1. Serum = Blood + Fibrinogen
2. Lymph = Plasma + RBC + WBC
3. Blood = Plasma + RBC + WBC + Platelets
4. Plasma = Blood – Lymphocytes

23. Which one of the following groups is called 'formed elements' of blood in human beings?

1.	Dissolved gases	\(O_2, CO_2, NO_2\)
2.	Plasma Proteins	Albumin, globin, prothrombin
3.	Blood cells	Erythrocytes, leucocytes, platelets
4.	Inorganic salts	\(Na^+, K^+, Mg^{++}, HCO^-_3, Cl^-\)

24. Regarding ABO grouping:

a.	the blood type is decided by the presence or absence of two surface antibodies on the RBCs namely anti-A and anti-B.
b.	the plasma of different individuals contain two natural antigens.
c.	a person with blood group A can receive blood either from a person with blood group O or from a person with blood group AB.
d.	a person with blood group A can donate blood either to a person with blood group O or to a person with blood group A.

1. only a and b are correct
2. only c and d are correct
3. a, b, c, and d are correct
4. a, b, c, and d are incorrect

25. Identify the incorrect statement regarding transport of respiratory gases in humans:

1.	Blood is the medium of transport for O₂ and CO₂.
2.	About 97 per cent of O2 is transported by RBCs in the blood.
3.	Nearly 70 per cent of CO2 is transported by RBCs.
4.	About 7 per cent of CO2 is carried in a dissolved state through plasma

26. The chamber of the human heart with the thickest musculature is the:

1.	Right atrium	2.	Right ventricle
3.	Left atrium	4.	Left ventricle

27. During cardiac cycle:

1.	all the four chambers of heart can never be in a relaxed state simultaneously.
2.	as the tricuspid valve gets open, blood from the pulmonary artery flows into the right ventricle.
3.	all the four chambers of heart can never be in a contracted state simultaneously.
4.	as the bicuspid valve gets open, blood from the aorta flows into the left ventricle.

28. Consider the two given statements:

I:	Pulmonary circulation carries deoxygenated blood to the lungs and brings oxygenated blood back to the heart.
II:	The systemic circulation provides nutrients, oxygen and other essential substances to the tissues and takes carbon dioxide and other harmful substances away for elimination.

1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect

29.

Person with blood group AB is considered as universal recipient because he has:

1.	both A and B antigens on RBC but no antibodies in the plasma
2.	both A and B antibodies in the plasma
3.	no antigen on RBC and no antigens in the plasma
4.	both A and B antigens in the plasma but no antibodies

30. If the average duration of cardiac cycle were 0.6 seconds, the number of cardiac cycles per minute will be about:

1.	60	2.	75
3.	72	4.	100

31.

Match the Column I and Column II:

	Column I		Column II
(a)	P-waves	(i)	Depolarisation of ventricles
(b)	QRS complex	(ii)	Repolarisation of ventricles
(c)	T-wave	(iii)	Coronary ischemia
(d)	Reduction in the size of T-wave	(iv)	Depolarisation of atria
		(v)	Repolarisation of atria

Select the correct option:

Options:	(a)	(b)	(c)	(d)
1.	(ii)	(iii)	(v)	(iv)
2.	(iv)	(i)	(ii)	(iii)
3.	(iv)	(i)	(ii)	(v)
4.	(ii)	(i)	(v)	(iii)

32. Match the items given in Column I with those given in Column II and select the correct option given below:

	Column I		Column II
i.	Fibrinogen	a.	Osmotic balance
ii.	Globulin	b.	Blood clotting
iii.	Albumin	c.	Defence mechanism

1. i-a, ii-c, iii-b
2. i-a, ii-b, iii-c
3. i-c, ii-b, iii-a
4. i-b, ii-c, iii-a

33. An enzyme complex required to initiate the process of coagulation or clotting in response to an injury or trauma is:
1. Plasmin
2. Fibrinolysis
3. Thrombokinase
4. Streptokinase

34. When compared to the wall of a typical vein, the wall of a typical artery will show a well developed:
1. Tunica intima
2. Tunica media
3. Tunica externa
4. Tunica albuginea

35. Serum is
1. Plasma without clotting factors
2. Blood without blood cells
3. Blood without clotting factors
4. Blood without RBCs

Biology-II-Section-B

36. What feature on ECG represents the return of ventricles from excited to normal state?

1.	P wave	2.	R wave
3.	S wave	4.	T wave

37. Match each item in Column I with one in Column II and select the correct match from the codes given:

	Column I [Blood type]		Column II [Can receive blood from]
A	A	P	A and O
B	B	Q	Only O
C	AB	R	A, B, AB and O
D	O	S	B and O

Codes:

	A	B	C	D
1.	S	P	Q	R
2.	P	S	R	Q
3.	P	Q	S	R
4.	S	P	R	Q

38. Identify the correct chronological arrangement of the components of the cardiac conduction nodal tissue:

1.	SA node, AV bundle, AV node, Purkinje fibers
2.	SA node, AV node, AV bundle, Purkinje fibers
3.	AV node, AV bundle, SA node, Purkinje fibers
4.	AV node, SA node, Purkinje fibers, AV bundle

39. Rh incompatibility can lead to grave consequence in cases where:

1.	an Rh negative mother is carrying an Rh positive foetus
2.	an Rh negative mother is carrying an Rh negative foetus
3.	an Rh positive mother is carrying an Rh positive foetus
4.	an Rh positive mother is carrying an Rh negative foetus

40.

When anti B antibodies are present in the plasma and A antigens on the surface of RBCs of a person, her blood group can be:

1.	A and AB	2.	Only A
3.	Only B	4.	O

41. Consider the given two statements:

I:	The type of antigen present on the RBCs of a person with blood group type A is A
II:	The type of antibodies present in the plasma of a person with blood group type A is anti-A

1.	Only I is correct
2.	Only II is correct
3.	Both I and II are correct
4.	Both I and II are incorrect

42. The most frequent and the least frequent white blood cells in the blood of a healthy adult human will, respectively, be:
1. Neutrophil and Eosinophil
2. Lymphocyte and Basophil
3. Neutrophil and Basophil
4. Lymphocyte and Monocyte

43. Fibrinogen, globulins and albumins are the major proteins and their primary functions are:

1.	Fibrinogen – clotting of blood; Globulins – colloid osmotic pressure; Albumins – defence mechanisms
2.	Fibrinogen – clotting of blood; Globulins – defence mechanisms; Albumins – colloid osmotic pressure
3.	Fibrinogen – prevention of clotting of blood; Globulins – colloid osmotic pressure; Albumins – defence mechanisms
4.	Fibrinogen – prevention of clotting of blood; Globulins – defence mechanisms; Albumins – colloid osmotic pressure

44. Consider the two statements:

Assertion (A):	The human heart is called as myogenic.
Reason (R):	The human heart is made up of cardiac muscles.

1.	Both (A) and (R) are True and (R) correctly explains (A).
2.	(A) is True but (R) is False.
3.	Both (A) and (R) are True but (R) does not correctly explain (A).
4.	(A) is False but (R) is True.

45. Identify the correct statements:

I:	Arteries take blood away from the heart.
II:	Veins carry blood towards the heart.

1. Only I
2. Only II
3. Both I and II
4. Neither I nor II

46.

The second heart sound [dub] is associated with simultaneous closure of:

1.	Right AV and pulmonary semilunar valve
2.	Left AV and aortic semilunar valve
3.	Right and left AV valves
4.	Right and left semilunar valves

47. Granulocytes are white blood cells that include:

I:	Basophil
II:	Eosinophil
III:	Lymphocyte
IV:	Monocyte

1. Only I and II
2. Only III and IV
3. Only I and III
4. Only II and IV

48.

The least common of WBCs in the human blood are:

1.	Eosinophils	2.	Lymphocytes
3.	Neutrophils	4.	Basophils

49. Consider the given statements:

I:	The opening between the right atrium and the right ventricle is guarded by the tricuspid valve.
II:	A bicuspid or mitral valve guards the opening between the left atrium and the left ventricle.
III:	The openings of the right and the left ventricles into the pulmonary artery and the aorta respectively are provided with the semilunar valves.

1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct

50. All the following are functions of lymph in the human body except:

1.	Helps in digestion of fats
2.	Returns proteins and excess interstitial fluid to the bloodstream
3.	Transports nutrients and hormones
4.	Helps in immunity against disease-causing agents

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