Which Microscope Can Be Used to Visualize DNA or Botulinum

Question

Which microscope can be used to visualize DNA or botulinum toxin?
A)compound light microscope
B)phase-contrast microscope
C)scanning tunneling microscope
D)confocal microscope
E)scanning electron microscope

Accepted Answer

Scanning tunneling microscopes (STMs) are capable of visualizing structures at the atomic scale, including DNA and individual molecules like botulinum toxin. This level of detail is beyond the resolution capabilities of light and electron microscopes.