What is the reason that a modern electron microscope (TEM) can resolve biological images to the subnanometer level, as opposed to tens of nanometers achievable for the best super-resolution light microscope?
A) The focal length of the electron microscope is significantly longer.
B) Contrast is enhanced by staining with atoms of heavy metal.
C) Electron beams have much shorter wavelengths than visible light.
D) The electron microscope has a much greater ratio of image size to real size.
E) The electron microscope cannot image whole cells at one time.
electron microscope image of a pyralidae moth
Posterior views of H. erectus, Neandertal, and modern H. sapiens show differences in vault shape.
(A) Major leukocytes. (B) Enhanced color photograph from a scanning electron microscope of a ...
Scanning electron micrograph of HIV-1 budding (in green) from cultured lymphocyte. This image has ...
Replicated human chromosomes as seen by scanning electron microscopy
Electron micrograph of Euglena gracilis