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Biology - section - 2
  1. When a foreign body inter into blood circulatory system the reaction is started by

    2. A.

     RBC
    B.

     WBC
    C.

     Platletes
    D.

     Cytoplasm

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  2. How many chambers does a human heart have?

    3. A.

     2
    B.

     4
    C.

     6
    D.

     7

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  3. The muscle which separate the right side and left side of heart is known as

    4. A.

     Keratin
    B.

     Maxilla
    C.

     Septum
    D.

     Tubercules

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  4. What is the pH value range of human blood?

    5. A.

     7.1-7.15
    B.

     7.45-7.55
    C.

     7.22-7.28
    D.

     7.35-7.45

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  5. The main function of hemoglobin is

    6. A.

     Carries Oxygen
    B.

     Control Blood Pressure
    C.

     Produce hormones
    D.

     None of the above

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  6. The colour of Hemoglobin is

    7. A.

     Red
    B.

     Yellow
    C.

     White
    D.

     Colorless

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  7. The elastic vessels which transport blood to the heart is known as

    8. A.

     Arteries
    B.

     Veins
    C.

     Capillaries
    D.

     None of the above

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  8. The elastic vessels which transport blood from the heart is known as

    9. A.

     Arteries
    B.

     Sinusoids
    C.

     Capillaries
    D.

     None of the above

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  9. White blood cell act

    10. A.

     As a defence against infection
    B.

     As a source of energy
    C.

     For clotting blood
    D.

     As a medium for oxygen transport from lung to tissues

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  10. The top chambers of human heart are called

    11. A.

     Aorta
    B.

     Atrium
    C.

     Septum
    D.

     Ventricle

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