Blood MCQs with answers:
Question: Which of the following has no blood but breathes?
(a) Cockroach
(b) Earthworm
(c) Fish
(d) Hydra
Question: The whale is a warm-blooded creature. It survives in cold seas. Its main device for keeping warm is
(a) Pelage
(b) Muscles
(c) Blubber
(d) Blood vessels
Question: Thromboplastin, required in blood clotting, is secreted by __
(a) monocytes
(b) lymphocytes
(c) erythrocytes
(d) platelets
Question: Which one of the following binds with hemoglobin irreversibly?
(a) Methane
(b) Carbon monoxide
(c) Ethane
(d) Chlorine
Question: Name the blood cell which is found in abundance in the human body
(a) Red blood cells
(b) Plasma
(c) Blood proteins
(d) White blood cells
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Question: The largest number of white blood corpuscles are
(a) Eosinophils
(b) Basophils
(c) Neutrophils
(d) Monocytes
Question: Persons with which blood group are called universal donors?
(a) AB
(b) A
(c) O
(d) B
Question: Number of RBC in an adult man per 3 mm of blood is.
(a) 500
(b) 5000
(c) 500000
(d) 5000000
Question: Who discovered ‘circulation of blood’ in the human body?
(a) Edward Jenner
(b) Joseph Lister
(c) William Harvey
(d) Jonon Esals
Question: Which of the following vitamins is responsible for blood clotting?
(a) Vitamin C
(b) Vitamin D
(c) Vitamin E
(d) Vitamin K
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Question: At high altitude, RBC’s of human blood will __
(a) increase in number
decrease in number
(c) decrease in size
(d) increase in size
Question: Which of the following is called a blood bank?
(a) Spleen
(b) Lever
(c) Heart
(d) None of these
Question: Which of the following contains Hemoglobin ?
(a) Plasma
(b) Red blood cells
(c) White blood cells
(d) Platelets
Question: If a person, normally living at sea level, migrates to a hill of about 8000 feet high, his blood after about fifteen days will have
(a) Fewer W.B.C.
(b) More plasma
(c) More antibodies
(d) Greater number of RBC
Question: In which vertebrate oxygenated and deoxygenated blood gets mixed?
(a) Fish
(b) Amphibian
(c) Bird
(d) Mammal
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Question: The smallest blood vessel in the body is a
(a) Capillary
(b) Artery
(c) Vena cava
(d) Vein
Question: What volume of blood enters the renal arteries per minute in man?
(a) 100 ml
(b) 500 ml
(c) 1200 ml
(d) 5000 ml
Question: Oxygenated blood is carried by
(a) Pulmonary vein
(b) Pulmonary artery
(c) Hepatic portal vein
(d) Renal vein
Question: In a closed circulatory system, blood is completely enclosed within .
(a) the skeleton
(b) Sinuses
(c) Blood Vessels
(d) Heart
Question: Dissociation of oxyhemoglobin is directly proportional to blood carbon dioxide tension is known as
(a) Haldane effect
(b) Chloride shift
(c) Bohr effect
(d) Hering-Breure inflamation reflex
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Question: Which of the following prevents filtration of larger protein from blood into nephric filtrate?
(a) Endothelial fenestration
(b) Slit membrane between pedicels
(c) Basal lamina of glomerulus
(d) Outer wall of Bowman’s capsule
Question: The number of RBCs per unit volume of blood is likely to be higher in a person living at higher altitudes because
(a) Air is clear and unpolluted
(b) Air is less dense, i.e. with less oxygen
(c) More sunshine is available
(d) Vegetation gives out more O2
Question: Without which corpuscles blood clotting is not possible
(a) Erythrocytes
(b) Thrombocytes
(c) Plasmocytes
(d) Leucocytes
Question: Amount of Oxygen normally carried by 100 ml of pure blood, Is
(a) 50 ml
(b) 2 ml
(c) 20 ml
(d) 5ml
Question: Cells forming the wall of blood capillaries are called
(a) Oxynthic cells
(b) Endothelial cells
(c) Perietal cells
(d) Hemocytes
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Question: RBC of camel are
(a) Oval, non-uncleated
(b) Round, biconvex nucleated
(c) Round biconvex, non-nucleated
(d) Oval, nucleated, biconvex
Question: Normally, blood clots in
(a) 12-16 Minutes
(b) 16-20 Minutes
(c) 1 minute
(d) 2-8 Minutes
Question: A patient of diabetes mellitus drinks more water because he climinates from the blood, extra amount of which substance
(a) Protein
(b) Sugar
(c) Water
(d) Hormone
Question: Red blood corpuscles are formed in the __
(a) Liver
(b) Bone marrow
(c) Kidneys
(d) Heart
Question: The chemical that prevents blood clotting is
(a) Filoquilon
(b) Thiamin
(c) Cynocvalamine
(d) Heparin
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Question: Which blood group can be a universal donor?
(a) O
(b) A
(c) B
(d) AB
Question: Blood is formed in the human adult by
(a) Heart
(b) Red bone marrow
(c) Spleen
(d) yellow bone marrow
Question: The Oxygen dissociation curve of Hemoglobin is
(a) Hyperbolic
(b) Hypobolic
(c) Sigmoid
(d) Linear
Question: In human blood, the oxygen carrier is
(a) Iron
(b) Meth–hemoglobin
(c) Hemocyanin
(d) Hemoglobin
Question: A person of blood group AB can give blood to :
(a) ‘A’ and ‘B’
(b) Only ‘AB’
(c) ‘A’, ‘B’ and ‘O’
(d) All of these
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Question: About how much blood is in the circulatory system of an average person
(a) 7 liters
(b) 2 liters
(c) 5 liters
(d) 13 liters
Question: In which organ the blood is stored
(a) Spleen
(b) Liver
(c) Kidney
(d) Heart
Question: Oxygen is transported in blood mainly by
(a) Leucocytes
(b) Erythrocytes
(c) Thrombocytes
(d) Blood plasma
Question: The blood pressure of a young male human being is
(a) 110/70
(b) 120/80
(c) 135/90
(d) 140/100
Question: Blood will lose maximum oxygen when it passes through
(a) Alveolar capillaries
(b) Tissue capillaries
(c) Arteries
(d) Veins
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Question: Human blood group inheritance is which type of dominance?
(a) Complete dominance
(b) Incomplete dominance
(c) Codominance
(d) Irregular dominance
Question: Blood pressure is controlled by—
(a) Adrenal gland
(b) Thyroid gland
(c) Thymus
(d) Corpus luteum
Question: Myeloid stem cells give rise to all the formed elements of blood except
(a) Platelets
(b) Monocytes
(c) Eosinophils
(d) lymphocytes
Question: Blood capillaries are made up of
(a) Endothelium and thin coat of connective tissue
(b) Endothelium and thin coat of muscle fibers
(c) Endothelium and thin coat of connective tissue and muscle fibers
(d) Only endothelium
Question: Which of the following is an anticoagulant which checks blood coagulation in blood vessels?
(a) Prothrombin
(b) Globulin
(c) Thromboplastin
(d) Heparin
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Question: Low oxygen concentration favors
(a) Union of carbon dioxide from blood proteins
(b) Separation of carbon dioxide from blood proteins
(c) Separation of carbon dioxide from hemoglobin
(d) None of these
Question: RBC was kept in a solution. In a few minutes it burst. The solution was
(a) Hypertonic
(b) Isotonic
(c) Hypotonic
(d) Canesuger solution
Question: Dextran is used in
(a) Bleeding
(b) Blood preservation
(c) Blood transfusion
(d) Blood clotting
Question: Red blood cells live for
(a) 12 days
(b) 20 days
(c) 100 days
(d) 120 days
Question: Harmful bacteria and other foreign bodies are destroyed by
(a) Plasma protein
(b) Platelets
(c) Phagocytosis by RBC
(d) Phagocytosis of WBC
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Question: Rejection of a transplanted organ is brought about by
(a) B cells
(b) T cells
(c) Natural Killer cells
(d) Monocytes
Question: Which of the following formed elements changes into macrophages?
(a) Eosinophils
(b) Basophils
(c) Neutrophils
(d) Monocytes
Question: Thalassemia is caused due to
(a) Excessive loss of RBCs through bleeding
(b) Insufficient hemopoiesis
(c) Efficient synthesis of hemoglobin
(d) Inadequate absorption of iron
Question: A characteristic of leucocytes is
(a) Denucleation (loss of nucleus)
(b) Diapedesis
(c) Agranular cytoplasm
(d) Colour
Question: Certain compounds are released by the WBC which raises the body’s temperature. These compounds are known as
(a) Pyrogens
(b) Histamines
(c) Toxigens
(d) Pathogens
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Question: What color is a squid’s blood when oxygenated?
(a) Blue
(b) Bright green
(c) Bright red
(d) Colorless
