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)light microscopy
B)electron microscopy
C)differential interference contrast microscopy
D)fluorescence microscopy
E)phase-contrast microscopy

Question

Quizplus · Accepted Answer

Electron microscopy is generally not used to view living cells or organisms, as the sample needs to be heavily processed and prepared for imaging. It is best for viewing fine structures of nonliving material, such as viruses or bacterial cell walls. Therefore, it is the least likely technique to be used to view motile protozoa.

A Scientist Is Examining Motile Protozoa