Electron Microscopist Question:

Download Job Interview Questions and Answers PDF

Which of the following statements about Transmission Electron Microscopy is not true.
A) The specimen must be stained with osmium or other heavy metal.
B) The specimens are placed in a high vacuum for viewing.
C) The specimens must be sliced very thin, 20-100 nm in thickness.
D) The beam is focused by electromagnetic lenses

Electron Microscopist Interview Question

Answer:

A) The specimen must be stained with osmium or other heavy metal.

Download Electron Microscopist Interview Questions And Answers PDF

Previous Question

Next Question

Which of the following statements is most correct about Atomic Force Microscopy (AFM)?
A) AFM can visualize protein bound to DNA molecules.
B) AFM can visualize unfixed specimens in water or buffer.
C) AFM moves a very sharp tip over the surface of the specimen to "feel" its shape.
D) All the statements above are true

Phase Contrast microscopy:
A) Continuously changes the phase of the incident light from the condenser to improve contrast in the specimen.
B) Uses circular filters in the condenser and objective to give contrast to parts of the cell with different refractive indices.
C) Uses special lenses to distinguish between solid and liquid phases of the cell.
D) Uses special lenses to change the color of light passing through them