NEET Biology Body Fluids and Circulation MCQs Set 24

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Multiple Choice Questions

Question 1: Person with blood group AB is considered as universal recipient because he has
(a) Both A and B antigens on RBC but no antibodies in the plasma
(b) Both A and B antibodies in the plasma
(c) No antigen on RBC and no antibody in the plasma
(d) Both A and B antigens in the plasma but no antibodies
Show Answer & Explanation

Answer: (a) Both A and B antigens on RBC but no antibodies in the plasma

Explanation:
1. Person with blood group AB has both A and B antigens on RBC but no antibodies in the plasma.

Question 2: A patient brought to a hospital with myocardial infarction is normally immediately given
(a) Cyclosporin-A
(b) Statins
(c) Penicillin
(d) Streptokinase
Show Answer & Explanation

Answer: (d) Streptokinase

Explanation:
1. This option, Streptokinase, is the correct choice, as it agrees with the standard NCERT account of this topic.

Question 3: A certain road accident patient with unknown blood group needs immediate blood transfusion. His one doctor friend at once offers his blood. What was the blood group of the donor?
(a) Blood group O
(b) Blood group A
(c) Blood group B
(d) Blood group AB
Show Answer & Explanation

Answer: (a) Blood group O

Explanation:
1. This option, Blood group O, is the correct choice, as it agrees with the standard NCERT account of this topic.

Question 4: Which one of the following human organs is often called the “graveyard” of RBCs?
(a) Liver
(b) Gall bladder
(c) Kidney
(d) Spleen
Show Answer & Explanation

Answer: (d) Spleen

Explanation:
1. The older RBCs are removed from the circulation by the phagocytic cells of spleen mainly.
2. Hence, spleen is known as graveyard of RBC.

Question 5: A person with unknown blood group under ABO system, has suffered much blood loss in an accident and needs immediate blood transfusion. His one friend who has a valid certificate of his own blood type, offers for blood donation without delay. What would have been the type of blood group of the donor friend?
(a) Type A
(b) Type B
(c) Type AB
(d) Type O
Show Answer & Explanation

Answer: (d) Type O

Explanation:
1. This option, Type O, is the correct choice, as it agrees with the standard NCERT account of this topic.

Question 6: Which one of the following statements is correct regarding blood pressure?
(a) 190/110 mm Hg may harm vital organs like brain and kidney
(b) 130/90 mm Hg is considered high and requires treatment
(c) 100/55 mm Hg is considered an ideal blood pressure
(d) 105/50 mm Hg makes one very active
Show Answer & Explanation

Answer: (a) 190/110 mm Hg may harm vital organs like brain and kidney

Explanation:
1. Blood pressure of an individual is 140/90 or higher, it shows hypertension which leads to heart diseases and also affect vital organs like brain and kidney.

Question 7: What is true about RBCs in humans?
(a) They do not carry CO2 at all
(b) They carry about 20-25 percent of CO2
(c) They transport 99.5 percent of O2
(d) They transport about 80 percent oxygen only and the rest 20 percent of it is transported in dissolved state in blood plasma
Show Answer & Explanation

Answer: (b) They carry about 20-25 percent of CO2

Explanation:
1. This option, They carry about 20-25 percent of CO2, is the correct choice, as it agrees with the standard NCERT account of this topic.

Question 8: Given below are four statements (a-d) regarding human blood circulatory system<br />(a) Arteries are thick-walled and have narrow lumen as compared to veins<br />(b) Angina is acute chest pain when the blood circulation to the brain is reduced<br />(c) Persons with blood group AB can donate blood to any person with any blood group under ABO system<br />(d) Calcium ions play a very important role in blood clotting Which two of the above statements are correct?
(a) (a) & (d)
(b) (a) & (b)
(c) (b) & (c)
(d) (c) & (d)
Show Answer & Explanation

Answer: (a) (a) & (d)

Explanation:
1. Statement(b) is wrong because acute chest pain appears when no enough oxygen is reaching the heart muscle.
2. Statement(c) is wrong, because AB is universal acceptor, not universal donor.

Question 9: The haemoglobin content per 100 ml of blood of a normal healthy human adult is
(a) 5 - 11 g
(b) 25 - 30 g
(c) 17 - 20 g
(d) 12 - 16 g
Show Answer & Explanation

Answer: (d) 12 - 16 g

Explanation:
1. This option, 12 - 16 g, is the correct choice, as it agrees with the standard NCERT account of this topic.

Question 10: Compared to blood our lymph has
(a) Plasma without proteins
(b) More WBCs and no RBCs
(c) More RBCs and less WBCs
(d) No plasma
Show Answer & Explanation

Answer: (b) More WBCs and no RBCs

Explanation:
1. Lymph has more WBC, because lymph nodes produce lymphocytes and the lymph takes lymphocytes and antibodies from the lymph nodes.

Question 11: There is no DNA in
(a) Mature RBCs
(b) A mature spermatozoan
(c) Hair root
(d) An enucleated ovum
Show Answer & Explanation

Answer: (a) Mature RBCs

Explanation:
1. Matured RBCs do not have cell organelles including nucleus, golgi bodies, mitochondria, ribosomes, centrioles and endoplasmic reticulum.

Question 12: Globulins contained in human blood plasma are primarily involved in:
(a) Osmotic balance of body fluids
(b) Oxygen transport in the blood
(c) Clotting of blood
(d) Defence mechanisms of body
Show Answer & Explanation

Answer: (d) Defence mechanisms of body

Explanation:
1. This option, Defence mechanisms of body, is the correct choice, as it agrees with the standard NCERT account of this topic.

Question 13: In humans, blood passes from the post caval to the diastolic right atrium of heart due to
(a) Pressure difference between the post caval and atrium
(b) Pushing open of the venous valves
(c) Suction pull
(d) Stimulation of the sino auricular node
Show Answer & Explanation

Answer: (a) Pressure difference between the post caval and atrium

Explanation:
1. This option, Pressure difference between the post caval and atrium, is the correct choice, as it agrees with the standard NCERT account of this topic.

Question 14: Consider the following statements about biomedical technologies<br />a. During open heart surgery blood is circulated in the heart-lung machine.<br />b. Blockage in coronary arteries is removed by angiography.<br />c. Computerised Axial Tomography (CAT) shows detailed internal structure as seen in a section of body.<br />d. X-ray provides clear and detailed images or organs like prostate glands and lungs. Which two of the above statements are correct?
(a) a and b
(b) b and d
(c) c and d
(d) a and c
Show Answer & Explanation

Answer: (d) a and c

Explanation:
1. This option, a and c, is the correct choice, as it agrees with the standard NCERT account of this topic.

Question 15: If you suspect major deficiency of antibodies in person, to which of the following would you look for confirmatory evidence?
(a) Haemocytes
(b) Serum albumins
(c) Serum globulins
(d) Fibrinogen in the plasma
Show Answer & Explanation

Answer: (c) Serum globulins

Explanation:
1. This option, Serum globulins, is the correct choice, as it agrees with the standard NCERT account of this topic.

Question 16: A drop of each of the following, is placed separately on four slides. Which of them will not coagulate?
(a) Whole blood from pulmonary vein
(b) Blood plasma
(c) Blood serum
(d) Sample from the thoracic duct of lymphatic system
Show Answer & Explanation

Answer: (c) Blood serum

Explanation:
1. This option, Blood serum, is the correct choice, as it agrees with the standard NCERT account of this topic.

Question 17: The ‘blue baby’ syndrome results from
(a) Excess of chloride
(b) Methaemoglobin
(c) Excess of dissolved oxygen
(d) Excess of TDS (Total Dissolved Solids)
Show Answer & Explanation

Answer: (b) Methaemoglobin

Explanation:
1. This option, Methaemoglobin, is the correct choice, as it agrees with the standard NCERT account of this topic.

Question 18: G-6-P dehydrogenase deficiency is associated with haemolysis of
(a) Lymphocytes
(b) RBCs
(c) Platelets
(d) Leucocytes
Show Answer & Explanation

Answer: (b) RBCs

Explanation:
1. This option, RBCs, is the correct choice, as it agrees with the standard NCERT account of this topic.

Question 19: Which of the following substances, if introduce in the blood stream, would cause coagulation, at the site of its introduction?
(a) Fibrinogen
(b) Prothrombin
(c) Heparin
(d) Thromboplastin
Show Answer & Explanation

Answer: (d) Thromboplastin

Explanation:
1. This option, Thromboplastin, is the correct choice, as it agrees with the standard NCERT account of this topic.

Question 20: Lymph collected from left side of the body collected through thoracic duct and finally opens into
(a) Right sub clavian vein
(b) Righ sub clavian artery
(c) Left sub clavian vein
(d) Left sub clavian artery
Show Answer & Explanation

Answer: (c) Left sub clavian vein

Explanation:
1. This is so because thoracic duct is located on the left side and further this duct will drain the lymph into subclavian vein located on the left side only.

Question 21: Systemic heart refers to
(a) The heart that contracts under stimulation from nervous system
(b) Left auricle and left ventricle in higher vertebrates
(c) Entire heart in lower vertebrates
(d) The two ventricles together in humans
Show Answer & Explanation

Answer: (b) Left auricle and left ventricle in higher vertebrates

Explanation:
1. Systemic heart means oxygenated heart which supplies blood to the body parts.

Question 22: Which of the following layer of heart is related to difference in thickness of different chambers of heart?
(a) Outer fibrous coat
(b) Epicardium
(c) Myocardium
(d) Endocardium
Show Answer & Explanation

Answer: (c) Myocardium

Explanation:
1. The heart has an outermost smooth coelomic epithelium - the visceral pericardium.
2. The middle thick muscular layer called myocardium, made up of muscle fibres.
3. Innermost layer i.e., endocardium.

Question 23: Which of the following are in direct contact with the AV valves and prevent these from collapsing back into atria?
(a) Chordae tendinae
(b) Papillary muscles
(c) Columnae carnae
(d) Musculi pectinati
Show Answer & Explanation

Answer: (a) Chordae tendinae

Explanation:
1. Special fibrous cords called the chordae tendinae are attached to the flaps of the bicuspid and tricuspid valves at one end and their other ends are attached to the ventricular wall with the special muscles.
2. The papillary muscles.
3. The chordae tendinae prevent the bicuspid and tricuspid valves from collapsing back into the atria during powerful ventricular contraction.
4. Columnae carinae : They are the rounded or irregular muscular column which project from the inner surface of the right and left ventricles of heart.

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