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Electron Microscopist Interview Question:

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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

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B) Uses circular filters in the condenser and objective to give contrast to parts of the cell with different refractive indices.
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Read Online Electron Microscopist Job Interview Questions And Answers

Top Electron Microscopist Questions

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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

☺	When flagella exist, their movement is powered by ATP in A) procaryotes only. B) eucaryotes only. C) both procaryotes and eucaryotes

☺	Which of the following is NOT equivalent to 10 micrometers. A) 0.0001 cm B) 0.01 mm C) 10,000 nm D) 100,000 Angstroms

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Which of the following statements is most correct about the differential Gram stain?
A) Crystal violet differentially stains Gram positive cells.
B) Gram's iodine differentially stains Gram positive cells.
C) Acetone differentially destains Gram negative cells.
D) Saffron red differentially stains Gram negative cells

☺	Living, unstained cells and organisms can be observed best using: A) fluorescent microscopy B) TEM C) phase contrast microscopy

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