Microscope Features and Types Quiz
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Questions and Answers

Which microscope type uses lasers and fluorescence to create a three-dimensional image of a sample?

  • Darkfield microscope
  • Fluorescence microscope
  • Electron microscope
  • Confocal microscope (correct)

What type of microscope was invented by Ernst Ruska in 1931?

  • Electron microscope (correct)
  • Brightfield microscope
  • Fluorescence microscope
  • Confocal microscope

Which microscope is used to visualize specimens that fluoresce, like Auramine phenol for M. tuberculosis?

  • Brightfield microscope (correct)
  • Confocal microscope
  • Electron microscope
  • Darkfield microscope

What do electron microscopes examine that must be smaller than about 0.2 μm?

<p>Viruses or internal cell structures (A)</p> Signup and view all the answers

Which microscope principle involves converting ultraviolet rays into visible light?

<p>Fluorescence principle (A)</p> Signup and view all the answers

What does resolution power refer to in a microscope?

<p>Ability to produce separate images of closely placed objects (C)</p> Signup and view all the answers

How is good contrast in microscopy achieved?

<p>By staining the specimen (B)</p> Signup and view all the answers

Which type of microscope is commonly used in the microbiology section?

<p>Brightfield microscope (A)</p> Signup and view all the answers

What is the principle behind a darkfield microscope?

<p>Object appears bright against a dark background (D)</p> Signup and view all the answers

How is magnification achieved in microscopy?

<p>By using concave lenses (B)</p> Signup and view all the answers

What does a phase-contrast microscope help visualize?

<p>Shape of living cells (B)</p> Signup and view all the answers

What part of the microscope can be rotated to switch between the objective lenses?

<p>Objective lens (C)</p> Signup and view all the answers

Which objective lens provides the lowest magnification power?

<p>Scanner (Red) (A)</p> Signup and view all the answers

What is the function of the fine adjustment knob in a microscope?

<p>Move the stage slowly for detailed focus adjustment (C)</p> Signup and view all the answers

Which part of the microscope is responsible for gathering and focusing light from the illuminator onto the specimen?

<p>Condenser (B)</p> Signup and view all the answers

What is the main function of the iris diaphragm in a microscope?

<p>Change light intensity reaching the specimen (D)</p> Signup and view all the answers

Which type of microscope illumination technique does the darkfield microscopy use?

<p>Darkfield (D)</p> Signup and view all the answers

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