Microscopes: Dissecting, Compound, and Electron
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Questions and Answers

What is the main difference between the dissecting microscope and the compound microscope?

  • The dissecting microscope has lower magnification, while the compound microscope has much greater magnification. (correct)
  • The dissecting microscope provides 3-dimensional views, while the compound microscope provides 2-dimensional views.
  • The dissecting microscope uses lenses for magnification, while the compound microscope uses electromagnets.
  • The dissecting microscope is used for small organisms, while the compound microscope is used for larger organisms.

    • How does an electron microscope differ from a compound microscope?

  • An electron microscope provides 3-dimensional views, while a compound microscope provides 2-dimensional views.
  • An electron microscope has lower magnification, while a compound microscope has much greater magnification.
  • An electron microscope uses lenses for magnification, while a compound microscope uses electromagnets.
  • An electron microscope uses beams of electrons to magnify and focus, while a compound microscope uses light for magnification. (correct)

    • What type of view does the scanning electron microscope (SEM) produce?

  • High-resolution 2-dimensional views of subcellular structures
  • Views of cell surfaces similar to those produced by a dissecting microscope (correct)
  • Views of thinly sliced tissues with high resolution
  • 3-dimensional views of individual cells

    • What is a disadvantage of using an electron microscope compared to light microscopy?

    <p>Preparing a specimen for an electron microscope involves killing it.</p> Signup and view all the answers

    Why is the compound microscope suitable for viewing subcellular structures?

    <p>It uses lenses to provide much greater magnification (1,000x).</p> Signup and view all the answers

    What is the primary function of a dissecting microscope?

    <p>To provide a 3-dimensional view of relatively low magnification</p> Signup and view all the answers

    Why is the compound microscope used to view thinly sliced tissues and individual cells as small as bacteria?

    <p>Because it provides much greater magnification (1,000x)</p> Signup and view all the answers

    What type of microscope can produce views of the surface of cells, similar to a dissecting microscope?

    <p>Scanning electron microscope (SEM)</p> Signup and view all the answers

    Which type of microscope provides high-resolution, two-dimensional views of thinly sliced cells?

    <p>Transmission electron microscope</p> Signup and view all the answers

    What is a disadvantage of using an electron microscope compared to light microscopy?

    <p>The need to prepare specimens by killing them</p> Signup and view all the answers

    Which type of microscope is used to view thinly sliced tissues and individual cells as small as bacteria?

    <p>Compound microscope</p> Signup and view all the answers

    What is a disadvantage of using an electron microscope compared to light microscopy?

    <p>The requirement to kill the specimen before viewing</p> Signup and view all the answers

    What is the primary function of an electron microscope?

    <p>To magnify and focus beams of electrons</p> Signup and view all the answers

    What can a scanning electron microscope (SEM) produce views of?

    <p>3-dimensional surfaces of cells</p> Signup and view all the answers

    What is a significant drawback of using an electron microscope compared to light microscopy?

    <p>Specimen preparation involves killing the organism</p> Signup and view all the answers

    Which type of microscope is best suited for examining the surface of small organisms such as insects?

    <p>Dissecting microscope</p> Signup and view all the answers

    Which type of microscope can produce high-resolution, two-dimensional views of thinly sliced cells?

    <p>Transmission electron microscope</p> Signup and view all the answers

    What makes the compound microscope suitable for viewing thinly sliced tissues and individual cells as small as bacteria?

    <p>Its high magnification capabilities</p> Signup and view all the answers

    What distinguishes the scanning electron microscope (SEM) from the compound microscope?

    <p>It produces 3-dimensional views</p> Signup and view all the answers

    Study Notes

    Microscopes Comparison

    • The primary difference between dissecting and compound microscopes is their application: dissecting microscopes are used to examine larger samples, such as organs or insects, while compound microscopes are used to study smaller samples, like cells and microorganisms.

    Electron Microscope vs Compound Microscope

    • Electron microscopes differ from compound microscopes in that they use a beam of electrons instead of light to produce an image, allowing for higher resolution and magnification.

    Scanning Electron Microscope (SEM)

    • The SEM produces a three-dimensional view of the sample surface, similar to a dissecting microscope.
    • Electron microscopes, including SEM, can produce high-resolution, two-dimensional views of thinly sliced cells.

    Disadvantages of Electron Microscopy

    • A significant drawback of using electron microscopy compared to light microscopy is that samples must be dehydrated and coated with metal, which can be time-consuming and may alter the sample.

    Compound Microscope Applications

    • Compound microscopes are suitable for viewing subcellular structures and thinly sliced tissues and individual cells as small as bacteria due to their high magnification power and resolution.

    Dissecting Microscope Function

    • The primary function of a dissecting microscope is to examine larger samples, such as organs or insects, in three dimensions.

    Microscope Selection

    • For examining the surface of small organisms, like insects, a dissecting microscope is best suited.
    • A compound microscope is ideal for viewing thinly sliced tissues and individual cells as small as bacteria.
    • Electron microscopes, including SEM, are used to produce high-resolution, two-dimensional views of thinly sliced cells.

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    Test your knowledge about different types of microscopes and their uses, including dissecting, compound, and electron microscopes. Learn about their features and applications.

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