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Human body and health

Written by Dr. Hamza Farooq (Physics)

22 Government jobs Everyday science questions with answers and explanations.

Printable worksheet with answer key

All questions with answers
  1. The number of bones in an adult human body is:

    • 1 206
    • 2 250
    • 3 180
    • 4 300
    Show answer

    Correct answer: 206

    A child has more bones, which join together as they grow, to give 206 in the adult.

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  2. The universal blood donor group is:

    • 1 A positive
    • 2 AB positive
    • 3 B negative
    • 4 O negative
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    Correct answer: O negative

    Red cells of group O negative carry no A, B or Rh antigens.

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  3. Insulin is produced by the:

    • 1 Pancreas
    • 2 Liver
    • 3 Kidney
    • 4 Stomach
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    Correct answer: Pancreas

    Beta cells of the pancreas make insulin, which controls blood sugar.

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  4. The deficiency of vitamin C causes:

    • 1 Rickets
    • 2 Scurvy
    • 3 Beriberi
    • 4 Night blindness
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    Correct answer: Scurvy

    Scurvy results from a lack of vitamin C.

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  5. Vitamin D is made in the skin with the help of:

    • 1 Water
    • 2 Sunlight
    • 3 Wind
    • 4 Heat
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    Correct answer: Sunlight

    Ultraviolet light in sunlight lets the skin make vitamin D.

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  6. The mosquito that spreads dengue fever is:

    • 1 Anopheles
    • 2 Tsetse fly
    • 3 Culex
    • 4 Aedes
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    Correct answer: Aedes

    Aedes mosquitoes spread dengue. Anopheles spreads malaria.

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  7. The pigment that carries oxygen in the blood is:

    • 1 Haemoglobin
    • 2 Keratin
    • 3 Melanin
    • 4 Chlorophyll
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    Correct answer: Haemoglobin

    Haemoglobin in the red cells binds oxygen.

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  8. The largest organ of the human body is the:

    • 1 Skin
    • 2 Lung
    • 3 Liver
    • 4 Brain
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    Correct answer: Skin

    The skin is the largest organ by area and weight.

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  9. The vaccine against smallpox was developed by:

    • 1 Louis Pasteur
    • 2 Edward Jenner
    • 3 Alexander Fleming
    • 4 Robert Koch
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    Correct answer: Edward Jenner

    Jenner developed the first vaccine in 1796 using cowpox.

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  10. Penicillin was discovered by:

    • 1 Joseph Lister
    • 2 Alexander Fleming
    • 3 Marie Curie
    • 4 Jonas Salk
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    Correct answer: Alexander Fleming

    Fleming noticed the mould's effect on bacteria in 1928.

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  11. The normal human body temperature is about:

    • 1 37 °C
    • 2 35 °C
    • 3 40 °C
    • 4 32 °C
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    Correct answer: 37 °C

    Normal core body temperature is about 37 °C.

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  12. The hormone that regulates blood sugar is:

    • 1 Adrenaline
    • 2 Thyroxine
    • 3 Oestrogen
    • 4 Insulin
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    Correct answer: Insulin

    Insulin lowers blood glucose.

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  13. Which organ filters the blood to make urine?

    • 1 Kidney
    • 2 Liver
    • 3 Pancreas
    • 4 Heart
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    Correct answer: Kidney

    The nephrons of the kidneys filter the blood.

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  14. The number of chambers in the human heart is:

    • 1 2
    • 2 5
    • 3 4
    • 4 3
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    Correct answer: 4

    Two atria and two ventricles.

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  15. A deficiency of iron causes:

    • 1 Goitre
    • 2 Rickets
    • 3 Scurvy
    • 4 Anaemia
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    Correct answer: Anaemia

    Iron is needed to make haemoglobin.

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  16. Which vitamin is needed for the clotting of blood?

    • 1 Vitamin C
    • 2 Vitamin A
    • 3 Vitamin D
    • 4 Vitamin K
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    Correct answer: Vitamin K

    Vitamin K helps the liver to make clotting factors.

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  17. Goitre is caused by a lack of:

    • 1 Calcium
    • 2 Iodine
    • 3 Iron
    • 4 Vitamin C
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    Correct answer: Iodine

    Iodine is needed for the thyroid hormone.

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  18. The disease spread by Anopheles mosquitoes is:

    • 1 Malaria
    • 2 Cholera
    • 3 Typhoid
    • 4 Dengue
    Show answer

    Correct answer: Malaria

    The Plasmodium parasite is carried by female Anopheles mosquitoes.

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  19. The largest artery in the body is the:

    • 1 Carotid artery
    • 2 Femoral artery
    • 3 Aorta
    • 4 Pulmonary artery
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    Correct answer: Aorta

    The aorta carries blood from the left ventricle.

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  20. Which blood cells fight infection?

    • 1 Red blood cells
    • 2 Plasma only
    • 3 White blood cells
    • 4 Platelets
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    Correct answer: White blood cells

    White cells are part of the immune system.

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  21. Bones are made mainly of:

    • 1 Calcium phosphate
    • 2 Keratin
    • 3 Sodium chloride
    • 4 Iron
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    Correct answer: Calcium phosphate

    Calcium phosphate gives bones their hardness.

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  22. The vaccine for polio is given:

    • 1 Only by surgery
    • 2 Only by skin patch
    • 3 By mouth drops or injection
    • 4 Only by inhaler
    Show answer

    Correct answer: By mouth drops or injection

    There are oral and injectable polio vaccines.

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