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Unit 4. The digestive system

  •  English    23     Public
    Science 4 Stage 5
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  • What is digestion?
    The process of breaking food into smaller substances the bod
    The removal of waste from the body
    The storage of food in the stomach
    The movement of food around the body
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  • Which organ is digestion started in?
    Oesophagus
    Small intestine
    Stomach
    Mouth
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  • What does saliva help to do?
    Absorb nutrients
    Remove waste
    Soften food and begin digestion
    Kill all bacteria in food
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  • Which tube carries food from the mouth to the stomach
    Lung
    Intestine
    Oesophagus
    Anus
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  • What is the main function of the stomach?
    To mix food with acid and digest it
    To remove waste
    To absorb water
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  • Where are most nutrients absorbed into the blood?
    Large intestine
    Small intestine
    Stomach
    Oesophagus
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  • Which organ absorbs most of the water from undigested food?
    Large intestine
    Small intestine
    Stomach
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  • Through which part does waste leave the body?
    Anus
    Small intestine
    Oesophagus
    Stomach
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  • Which part comes immediately after the stomach?
    Anus
    Large intestine
    Oesophagus
    Small intestine
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  • What happens in the mouth?
    Waste leaves the body
    Nutrients are absorbed
    Water is absorbed
    Food is chewed and mixed with saliva
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  • What happens in the oesophagus?
    Food is pushed to the stomach
    Food is digested by acid
    Nutrients are absorbed
    Waste is stored
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  • What happens in the stomach?
    Waste leaves the body
    Food is chewed
    Water is absorbed
    Food is mixed with acid and enzymes
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  • What happens in the small intestine?
    Nutrients are absorbed into the blood
    Food is swallowed
    Waste is removed
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  • What happens in the large intestine?
    Acid digests food
    Food is chewed
    Water is absorbed from undigested food
    Nutrients are absorbed
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  • What happens at the anus?
    Water is absorbed
    Food is digested
    Waste leaves the body
    Nutrients enter the blood
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  • Why do we need food?
    To be sick
    To get energy and nutrients for growth and repair
    To germinate
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