Which type of microscope provides the highest resolution for observing specimens?

• A. Scanning electron microscope
• B. Compound light microscope
• C. Transmission electron microscope
• D. Dissecting (stereo) microscope

Answer: (C)

Verified step by step guidance

1. Understand the concept of resolution in microscopy, which refers to the ability of a microscope to distinguish two points as separate entities. Higher resolution means finer details can be observed.
2. Recall that compound light microscopes use visible light and lenses, which limits their resolution to about 200 nanometers due to the wavelength of light.
3. Recognize that scanning electron microscopes (SEM) use electrons to scan the surface of specimens, providing detailed 3D images with better resolution than light microscopes but generally less than transmission electron microscopes.
4. Know that transmission electron microscopes (TEM) transmit electrons through ultra-thin specimens, allowing for much higher resolution (up to 0.1 nanometers) because electrons have much shorter wavelengths than visible light.
5. Compare the options and conclude that the transmission electron microscope provides the highest resolution among the listed types, making it the best choice for observing the finest structural details of specimens.