What Is the Primary Reason That a Modern Transmission Electron

question 52

Multiple Choice

What is the primary reason that a modern transmission electron microscope (TEM) can resolve biological images as small as 2 nm, whereas 200 nm is the limit of resolution for a light microscope?

• A) Diffraction of light by a light microscope distorts the image.
• B) Contrast is enhanced by staining with atoms of heavy metal.
• C) Electron beams have much shorter wavelengths than visible light.
• D) TEM is used to visualize very thin sections of cells.