Question

scientists can now identify antibiotic resistant bacteria by looking at 2-d images of bacteria at a very high power. scientists identified changes in the shape of their outer membrane. which microscope was used in this process?

○ dissecting microscope
○ compound microscope
○ scanning electron microscope
○ transmission electron microscope

Explanation:

• Dissecting microscopes have low magnification, unsuitable for high - power 2 - D bacteria images.
• Compound microscopes have limited magnification for such detailed membrane studies.
• Scanning electron microscopes produce 3 - D images of surface structures.
• Transmission electron microscopes (TEM) use electrons to create high - resolution 2 - D images of internal/outer structures at very high magnification, ideal for studying bacterial outer membrane shape changes.

Answer:

D. transmission electron microscope