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Organization of Multicellular Organisms
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  • Slide 1
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    Organization of Multicellular Organisms

    How do different structures carry out the functions of life?

  • Slide 2
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    How are multicellular organisms organized?

    • Multicellular organisms have different structures that perform specialized functions

    • From smallest to largest: cell, tissue, organ, organ system, organism

  • Question 3
    60 seconds
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    Q.

    What is a multicellular organism?

    answer choices

    an organism with one cell

    an organism with many cells

    an organism where organelles replace organs

  • Question 4
    60 seconds
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    Q.

    Which is NOT a level of organization in multicellular organisms?

    answer choices

    tissue

    organ

    cell

    organelle

  • Slide 5
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    Specialized Cells

    • The cell is the smallest unit of life

    • Different cells are specialized to carry out specific functions

    • Ex: Nerve Cells are long with many projections that connect to other nerve cells and transmit signals around the body

  • Question 6
    Ungraded
    300 seconds
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    Q.

    RESEARCH! What are three different types of specialized cells?

  • Question 7
    60 seconds
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    Q.

    FLASHBACK! Check all of the following that are organelles found in animal cells.

    answer choices

    chloroplast

    mitochondria

    cell membrane

    cell wall

    nucleus

  • Slide 8
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    Tissues

    • Groups of similar types of cells that work together to carry out specific tasks in multicellular organisms

    • Ex: Nervous tissue – carries messages to and from the brain

  • Question 9
    60 seconds
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    Q.

    True or False: Tissues are made of several different types of cells

    answer choices

    True

    False

  • Slide 10
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    Organs

    • Different groups of tissues working together to perform a particular job

    • Can be made up of several different tissue types

    • Ex: The Brain – made of nerve tissue, connective tissue, epithelial tissue, etc. Function: Control center for all the body’s functions, such as walking, talking, heart rate, etc.

  • Question 11
    60 seconds
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    Q.

    Choose all of the following that are ORGANS in the human body.

    answer choices

    diaphragm

    heart

    pistil

    lungs

    skin

  • Slide 12
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    Organ Systems

    • Groups of organs that work together to complete a series of tasks

    • Ex: Nervous System – brain, spinal cord, nerves

      • Monitors changes inside and outside the body

      • Processes and interprets sensory input

      • Supplies response by activating muscles or glands

  • Question 13
    60 seconds
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    Q.

    An organ system is a group of organs that work together to perform a particular task. Choose all of the following that are also systems.

    answer choices

    computer

    pile of sand

    bicycle

    piece of paper

    aquarium

  • Slide 14
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    Other Organ Systems

    • Digestive: breaks down food and absorbs nutrients

    • Excretory: removes solid, liquid and gas waste from the body

    • Respiratory: exchanges gases between the body and the environment

  • Question 15
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    300 seconds
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    Q.

    THINK! What do you think would happen to a human if they did not have a digestive system? Why do you think this would happen?

  • Slide 16
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    Other Organ Systems

    • Circulatory: transports nutrients, gases, wastes and other substances through the body

    • Muscular: allows movement

    • Skeletal: protects internal organs, provides support, helps the body move and stores minerals

  • Slide 17
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  • Question 18
    60 seconds
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    Q.

    Which of the following is the correct order of the levels of organization from smallest to largest?

    answer choices

    organ system, orgsn, tissue, cell

    tissue, orgsn system, cell, organ

    cell, tissue, organ, organ system

  • Slide 19
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    Organism

    • An individual living thing, such as a plant, animal, bacterium, protest, or fungus

    • Has a body made of smaller parts that work together

    • All organisms must be able to perform all 6 Characteristics of Life

  • Question 20
    60 seconds
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    Q.

    Check all of the following that are Characteristics of Life.

    answer choices

    Homeostasis

    Organization

    Response to Stimuli

    Growth & Development

  • Question 21
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    180 seconds
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    Q.

    Why do you think its important that living things are organized?

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