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The Scale of Microorganisms in Microscopy
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The Scale of Microorganisms in Microscopy

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Questions and Answers

What is the function of ribosomes in a cell?

  • Synthesizing proteins (correct)
  • Storing genetic information
  • Producing lipids for the cell membrane
  • Generating ATP through cellular respiration

    • Which organelle is responsible for cellular respiration and energy production in eukaryotic cells?

  • Endoplasmic reticulum
  • Mitochondrion (correct)
  • Golgi apparatus
  • Nucleus

    • What is the approximate size of the smallest bacteria mentioned in the text?

  • 10 nm (correct)
  • 1 μm
  • 0.1 μm
  • 100 μm

    • What is the main advantage of a scanning electron microscope (SEM) over a standard light microscope?

    <p>Higher resolution</p> Signup and view all the answers

    How does a transmission electron microscope (TEM) differ from a scanning electron microscope (SEM) in terms of sample interaction?

    <p>TEM scans the surface of the sample, while SEM transmits an electron beam through a thin section of the specimen.</p> Signup and view all the answers

    In terms of resolution, why are modern electron microscopes limited in their ability to resolve structures smaller than 2 nm across?

    <p>Diffraction of electrons</p> Signup and view all the answers

    What advantage does the electron microscope provide over the light microscope?

    <p>Higher resolution for studying subcellular structures</p> Signup and view all the answers

    How do atoms of heavy metals contribute to the functioning of an electron microscope?

    <p>Increase electron density in specific cellular regions</p> Signup and view all the answers

    Why is the scale on the left side of the image logarithmic in the context of electron microscopy?

    <p>To accommodate a range of sizes shown</p> Signup and view all the answers

    What type of lenses does a transmission electron microscope (TEM) use to focus the image for viewing?

    <p>Electromagnets</p> Signup and view all the answers

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