A scientist is examining motile protozoa. He wishes to determine their direction of movement. Which of the following microscopic techniques is least likely to be used to view these cells?
A)phase- contrast microscopy
B)fluorescence microscopy
C)light microscopy
D)electron microscopy
E)differential interference contrast microscopy

Question

Quizplus · Accepted Answer

Electron microscopy is least likely to be used for observing motile protozoa because it requires the sample to be fixed and dehydrated, which kills the cells and prevents observation of movement.

A Scientist Is Examining Motile Protozoa