Biology

8th

grade

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Nutrition review

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18 questions

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  • 1. Multiple Choice
    20 seconds
    1 pt

    What is the main function of the respiratory system?


    Elimination of waste

    Absorption of nutrients

    Digestion of food

    Exchange of gases

  • 2. Multiple Choice
    30 seconds
    1 pt

    What is the purpose of pulmonary circulation?

    to carry oxygen-rich blood away from the heart and bring it to the body

    to carry oxygen-poor blood away from the heart and bring it to the lungs

    to carry oxygen-poor blood from the body and return it to the heart

    to carry oxygen-rich blood from the lungs and return it to the heart

  • 3. Multiple Choice
    30 seconds
    1 pt

    What is the role of red blood cells?

    to defend the body against infection

    to form blood clots

    to carry nutrients to the cells

    to carry oxygen

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