Complete Exam Guide Subject-wise practice platform
Basic Histology Concepts

Electron Microscopy Practice Questions

20 free Electron Microscopy practice questions for the Histology, each with the correct answer and a detailed explanation. Open any question below, or take the full set as an interactive quiz.

Start Practice Quiz

Questions

All Electron Microscopy questions

20 questions
  1. Q1. Which of the following is the primary reason why electron microscopes have a much higher resolving power than light microscopes?
  2. Q2. In Transmission Electron Microscopy (TEM), what serves as the 'lens' to focus the electron beam?
  3. Q3. Which heavy metal is commonly used during 'postfixation' in electron microscopy to provide contrast and preserve lipids?
  4. Q4. What is the typical thickness of a tissue section required for Transmission Electron Microscopy (TEM)?
  5. Q5. Which type of electron microscopy is best suited for viewing the 3D surface morphology of a cell or tissue?
  6. Q6. To prevent scattering of the electron beam by gas molecules, the interior of an electron microscope must be maintained in a:
  7. Q7. In TEM, areas of the specimen that bind heavy metals appear dark on the final image. These areas are described as:
  8. Q8. What device is used to cut the ultrathin sections needed for electron microscopy?
  9. Q9. Which embedding medium is most commonly used for electron microscopy due to its hardness and stability under an electron beam?
  10. Q10. The image in a Transmission Electron Microscope is traditionally projected onto what for real-time viewing?
  11. Q11. Which technique involves 'shadowing' a specimen with heavy metal at an angle to highlight surface detail in TEM?
  12. Q12. Which electron microscopy preparation technique is specifically used to study the internal organization of cellular membranes?
  13. Q13. In Scanning Electron Microscopy (SEM), what is the purpose of coating the specimen with gold or platinum?
  14. Q14. Which artifact is caused by the high-energy electron beam damaging or 'burning' a thin section during viewing?
  15. Q15. What is 'Negative Staining' in electron microscopy primarily used for?
  16. Q16. A micrograph shows a detailed view of a mitochondrion's cristae. What was the most likely source of this image?
  17. Q17. Why is glutaraldehyde preferred over formalin for primary fixation in electron microscopy?
  18. Q18. What is the function of the 'Anode' in the electron gun of an electron microscope?
  19. Q19. What type of grid is typically used to support ultrathin sections in TEM?
  20. Q20. In SEM, the primary signal used to create the image is the detection of: