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.
The skeletal system of a modern horse
Electron Shells Determine the Reactivity of Atoms.
Cross-Section of a Banana Under a Microscope.
(a) Initial mtDNA results suggested modern humans and Neadertals were equally distantly related to D
Modern Cell Theory
Scanning electron micrograph of a diatom