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 Multiple Choice QuestionsMultiple Choice Questions

1.

Reduction in pH of blood will

  • reduce the blood supply to the brain

  • decrease the affinity of haemoglobin with oxygen

  • release bicarbonate ions by the liver

  • release bicarbonate ions by the liver

2760 Views

2.

Blood pressure in the pulmonary artery is

  • more than that in the carotid

  • more than that in the pulmonary vein

  • less than that in the Vena cava

  • less than that in the Vena cava

2769 Views

3.

The diagram given here is the standard ECG of a normal person. The P- wave represents the


  • Contraction of both the atria

  • initiation of the ventricular contraction

  • the beginning of the systole

  • the beginning of the systole

1039 Views

4.

Which one of the following animals has two separate circulatory pathways?

  • Frog

  • Lizard

  • Whale

  • Whale

2241 Views

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5.

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

  • AB valves open up

  • Ventricular walls vibrate due to gushing in of blood from atria

  • Semilunar valves close down after the blood flows into vessels from ventricles

  • Semilunar valves close down after the blood flows into vessels from ventricles

1029 Views

6.

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

  • Blood group B

  • Blood group AB

  • Blood group O

  • Blood group O

494 Views

7.

In which one of the following options the two examples are correctly matched with their particular type of immunity?

  • Examples Type of immunity
    Polymorpho-nuclear leukocytes and monocyte  Cellular barriers
  • Examples Type of immunity
    Anti-tetanus and anti-snake bite injections Active immunity

  • Examples Type of immunity
    Saliva in mouth and Tears in eyes Physical barriers

  • Examples Type of immunity
    Saliva in mouth and Tears in eyes Physical barriers

409 Views

8.

Which one of the following is wrong statement?

  • Anabaena and Nostoc are capable of fixing nitrogen in free-living state also

  • Root nodule forming nitrogen fixers live as aerobes under free-living conditions

  • Phosphorus is a constituent of cell membranes, certain nucleic acids and all proteins

  • Phosphorus is a constituent of cell membranes, certain nucleic acids and all proteins

528 Views

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9.

People who have migrated from the planes to an area adjoining Rohtang Pass about six months back 

  • Have more RBCs and their haemoglobin has a lower binding affinity of O2

  • are not physically fit to play games like football

  • Suffer from altitude sickness with symptoms like nausea, fatigue, etc

  • Suffer from altitude sickness with symptoms like nausea, fatigue, etc

849 Views

10.

Which one of the following human organs is often called the “graveyard” of RBCs?

  • Gall bladder

  • kidney

  • Spleen

  • Spleen

830 Views

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