Question

which microscopy method is beneficial because of its applications for living specimens?

scanning electron

oil immersion

magnetic resonance imaging

wet mount

Explanation:

• Scanning electron microscopy (SEM) requires specimens to be dried and coated, so living specimens can't be used.
• Oil immersion is a technique for light microscopes to increase magnification, but it doesn't preserve living specimens (specimens are usually prepared in ways that kill them for oil immersion use in standard cases, or if used on living, the oil can harm them).
• Magnetic resonance imaging (MRI) is a medical imaging technique for larger organisms (like humans/animals) to image internal structures, not a microscopy method for small specimens.
• Wet mount is a preparation technique for light microscopy where a specimen is placed in a drop of liquid (like water) and covered with a coverslip. This allows observation of living, unstained specimens (e.g., protozoa, bacteria in liquid media) as the liquid keeps them alive and allows movement/observation of living processes.

Answer:

D. Wet mount