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Science

7th

grade

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DNA and RNA

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4 questions

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  • 1. Multiple Choice
    45 seconds
    1 pt

    while viewing a specimen under high power of a compound light microscope, a student noticed that the specimen was out of focus what part of the microscope should the student turn to obtain a clearer image under high power.

    coarse adjustment

    fine adjustment

    nosepiece

    eyepiece

  • 2. Multiple Choice
    30 seconds
    1 pt

    what activity might lead to damage of a microscope and specimen

    using the course adjustment to focus the specimen under high power

    adjusting the diaphragm to obtain more light under high power

  • 3. Multiple Choice
    30 seconds
    1 pt

    single celled organisms are able to maintain internal stability because they

    work with other cells

    contain structures that perform life functions

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