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Model of Cells - The Basic Units of Life

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    Plant and animal cells.
  •   Study   Slideshow
  • What are cells?
    The basic building blocks of organisms.
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  • What is a unicellular organism?
    An organism made of only one cell.
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  • What is a multicellular organism?
    An organism made up of many cells.
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  • What device do scientists use to study cells?
    A microscope.
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  • What is the purpose of a microscope?
    To enlarge an image of cells so that we can see them more clearly.
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  • What three ways can cells vary from each other?
    Shape, size, structure according to their functions.
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  • Label the parts of the microscope.
    1-base,2-light source,3-diaphragm,4-stage,5-stage clip,6+7-objective lens,8-revolving nosepiece,9-arm,10-fine adjustment,11-eyepiece tube,12-coarse adjustment
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  • How should you carry the mircoscope?
    With both hands, one hand on the arm and the other under the base.
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  • How should you clean the microscope lens?
    Using lens paper.
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  • Name the two pieces of equiptment shown in the picture.
    Slide and cover slip
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  • What are the scanning powers of the three objective lenses?
    4x, 10x, 40x
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  • Draw and label a typical animal cell.
    nucleus, cell membrane, cytoplasm
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  • Draw and label a typical plant cell.
    chloroplasts, nucleus, cell membrane, cell wall, cytoplasm, vacuole, chloroplasts
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  • Why is iodine/methylene bule solution added to the cells before observing them under a microscope?
    The iodine solution highlights the different parts of the cell so that we can observe the cells more clearly under the microscope.
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  • What does chloroplast contain and why is it important?
    It contains chlorophyll and it is used to absorb energy from the sun to make food during photosynthesis.
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  • What is the cell wall used for?
    To support the plant cell and give it a regular shape.
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