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7 questions
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  • Q1

    Students jump rope for one minute to determine changes in heart rate and breathing rate. Their data are shown in the table.

    Which table explains the functions of the two body systems that the students investigated?

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    30s
    8.2e
  • Q2
    Which table best shows some functions of the circulatory, respiratory, digestive, and endocrine systems?
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    #texas/71bf38fa-3386-4a42-b30c-f20d6e1f4465/C.png
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    30s
  • Q3
    Many processes occur in the digestive system. Which process is best classified as a physical change?
    Teeth grinding an almond into smaller pieces in the mouth
    Bacteria converting lactose into simple sugars in the intestines
    Digestive enzymes breaking down proteins into smaller fragments
    Saliva converting the starch molecules in crackers into simple sugars
    30s
  • Q4
    Part of a human body system is pictured. The main function of this system is to —
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    control reproduction
    remove waste
    transport oxygen
    produce hormones
    30s
  • Q5
    This drawing shows a human body system. What is the primary function of this body system?
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    The production of hormones that regulate growth and metabolism
    The chemical breakdown of food into smaller pieces
    The transport of nutrients, water, and oxygen to body cells
    The protection of vital organs from injury
    30s
  • Q6
    What are the main functions of the human skeletal system?
    To regulate the composition of body fluids by removing metabolic wastes and retaining a balance of water, salt, and other nutrients
    To support the body, protect the organs, produce blood cells, and store calcium
    To regulate and maintain bodily functions by producing hormones and releasing them into the bloodstream
    To enable the diffusion of oxygen into the bloodstream and the removal of carbon dioxide from the bloodstream
    30s
  • Q7

    Which two body systems are primarily responsible for locomotion?

    Respiratory system and digestive system

    Nervous system and circulatory system

    Skeletal system and muscular system

    Integumentary system and excretory system

    30s

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