Question

Define scanning electron microscope in microbiology

Answer 1

A scanning electron microscope (SEM) is a type of electron microscope that produces images of a sample by scanning the surface with a focused beam of electrons. The electrons interact with atoms in the sample, producing various signals that contain information about the surface topography and composition of the sample.

Answer 2

Scanning electron microscope is a type of electron microscope that images a sample by scanning it with a high energy beam of electrons in a raster scan  pattern

• it uses a focused electron probe to extract chemical and structural information point by point from a region of interest in the sample.
• it can characterize a wide range of specimens at the nano meter to micrometer length scale.