Question 16

Scanning electron microscope is best suited for observing the surface structures of a virus particle.

The scanning electron microscope (SEM) provides detailed three-dimensional images of the surface structures of specimens, making it the ideal choice for observing virus particles.

A) Compound light microscope

The compound light microscope uses visible light and optical lenses to magnify samples. However, it lacks the resolution needed to observe the fine surface structures of virus particles, which are typically at the nanoscale, making this option unsuitable.

B) Scanning electron microscope

The scanning electron microscope is specifically designed to view surface details at a high resolution. It utilizes electrons rather than light, allowing for the imaging of intricate surface features of small objects like viruses, making it the correct choice.

C) Stereoscopic microscope

The stereoscopic microscope provides a three-dimensional view of larger specimens and is primarily used for dissection and larger samples. It is not capable of the high magnification required to observe the fine surface structures of virus particles.

D) Fluorescence microscope

While fluorescence microscopes are excellent for visualizing specific components within cells using fluorescent dyes, they are not primarily designed for detailed surface structure observation. This makes them less effective than the scanning electron microscope for the purpose of examining virus particles.

Conclusion

The scanning electron microscope stands out as the most appropriate tool for observing the surface structures of virus particles due to its superior resolution and imaging capabilities. The other options, while useful in different contexts, do not provide the necessary detail for such small structures, thereby confirming the SEM as the best choice.